Italian Baked Crepes with Fontina and Mushrooms | Crespelle Gratinate con Fontina e Funghi
Of all the fillings in this crespelle series, this is the alpine one, and it obeys mountain logic rather than Mediterranean logic. There is no acid in it anywhere. The structure comes from fat, from browned fungal protein and from a cheese bred over centuries to melt smoothly at low temperature.
The crespella base is handled differently here than in the tomato versions. The batter takes more butter and is spread as thin as the pan allows, because the filling is dry, dense and rich rather than wet and sharp. A delicate wrapper disappears politely under Fontina and lets the mushrooms lead; a robust one competes and makes every portion heavy.
The mark of success is definition. Cut one open and you should find recognisable pieces of mushroom, small molten points of cheese and a bechamel that binds without coating. When it goes wrong, and it goes wrong often, everything collapses into a single beige cream that tastes faintly of cheese and nothing of the woods.
Yield: 4 servings, about 12 crespelle. Prep: 45 minutes. Rest: 30 minutes. Cook: 50 minutes. Total: about 2 hours. Difficulty: intermediate. Course: primo piatto. Region: Valle d'Aosta and the western Alps.
The Story
Fontina is one of the oldest documented cheeses in the Alps. Records from the Aosta Valley describe a fat mountain cheese in the fifteenth century, and the name appears by the eighteenth. It is made only from the raw whole milk of Valdostana cows, worked within hours of milking, and the summer wheels come from herds grazing above six thousand feet. That pasture is why Fontina tastes of hay and nuts rather than simply of milk.
The Aosta Valley is also, historically, a French speaking region, which matters for a crepe. While the rest of Italy received French technique through courts and cookbooks, the valley had it as a neighbour across the Little Saint Bernard pass. Thin batter cooked in butter was never an import there, and filling it with the local cheese is simply what a valley rich in butter, milk and Fontina does. The dish sits beside fonduta in the same repertoire.
The mushrooms come from the chestnut and larch woods on the valley sides, gathered from late summer until the first hard frost. Porcini dominate the reputation but the baskets hold far more, and the alpine habit of drying the surplus is what makes this dish possible in February. Cheese from the high pasture, mushrooms from the forest below it, butter from the valley floor: the recipe is a vertical slice through one mountainside.
Ingredients
For the crespelle
All purpose flour, 1 cup (125 g)
Large eggs, 2
Whole milk, 1 1/4 cups (300 ml)
Unsalted butter, melted, 3 tbsp (42 g)
Fine sea salt, 1/4 tsp (1.5 g)
Unsalted butter for the pan, about 1 tbsp (14 g)
For the mushrooms
Mixed fresh mushrooms, cremini, chanterelle and porcini, 1 lb (450 g)
Dried porcini, 1/2 oz (15 g)
Extra virgin olive oil, 2 tbsp (30 ml)
Unsalted butter, 1 tbsp (14 g)
Shallot, finely chopped, 1 small
Garlic clove, lightly crushed, 1
Dry white wine, 1/2 cup (120 ml)
Fresh thyme leaves, 1 tsp (1 g)
Fine sea salt, 1/2 tsp (3 g)
Freshly ground black pepper, to taste
For the bechamel
Unsalted butter, 3 tbsp (42 g)
All purpose flour, 3 tbsp (24 g)
Whole milk, 2 1/2 cups (600 ml)
Fine sea salt, 1/2 tsp (3 g)
Freshly grated nutmeg, 1 small pinch
For the filling and finishing
Fontina Valle d'Aosta DOP, rind removed, diced small, 7 oz (200 g)
Fontina for the surface, 2 oz (55 g)
Parmigiano Reggiano, grated, 1/2 cup (50 g) for the filling
Parmigiano Reggiano, grated, 3/4 cup (75 g) for the surface
Unsalted butter for the dish and the top, 1 tbsp (14 g)
Preparation
Step 1
Rehydrate the dried porcini. Cover them with 1 cup (240 ml) of warm water for 30 minutes. Lift the pieces out with your fingers rather than pouring, since grit settles to the bottom, then chop them and strain the liquid through a cloth. That liquid is concentrated glutamate, but only about 3 tablespoons of it belong in the filling. More brings back the water you spend the rest of the recipe removing.
Step 2
Mix and rest the batter. Whisk the eggs and salt smooth, add a third of the milk, work in the flour without lumps, then add the remaining milk and the melted butter. Cover and leave 30 minutes. The extra butter makes the crespelle release almost without greasing and gives a softer wrapper suited to a dry filling.
Step 3
Cook them thin. Heat an 8 inch nonstick skillet over medium heat and use the smallest amount of batter that coats the base when swirled. Forty five to sixty seconds on the first side and fifteen on the second is enough. Aim for wrappers you can almost see through, pale and supple. They should feel like fabric, not like pancakes.
Step 4
Clean the fresh mushrooms properly. Brush them or wipe them with a barely damp cloth and trim the stem bases. Never put them under a tap: mushrooms absorb water rapidly and everything they take on has to be driven off again. Slice the caps about 1/4 inch (6 mm) thick, large enough to stay identifiable, since small dice vanish into the cheese.
Step 5
Brown the fresh mushrooms in batches. Get a wide skillet properly hot with half the oil and butter, add the crushed garlic for thirty seconds and remove it, then add mushrooms in a single layer with visible space between the slices. Do not stir for two minutes. Let them colour on the pan side, then continue until they squeak against the pan and smell nutty. Repeat with the rest.
Step 6
Finish the mushroom base. Return everything to the pan with the chopped porcini, the shallot and the thyme and cook two minutes until the shallot is soft. Season, pour in the wine and reduce until the pan is dry, then add the reserved 3 tablespoons of porcini liquid and reduce again until no free liquid remains. Spread the mixture on a tray so the steam escapes and it cools fast.
Step 7
Make a fluid bechamel. Melt the butter over medium low heat, whisk in the flour and cook it 90 seconds without colouring. Add the milk in three parts, whisking each smooth, then simmer 5 to 7 minutes until it lightly coats a spoon. Season with salt and nutmeg. It should pour freely: a thick bechamel is glue between two already rich ingredients.
Step 8
Handle the Fontina cold. Take the rind off, cut the cheese into dice of about 1/3 inch (1 cm) and keep them refrigerated until assembly. Fontina smears at room temperature, and smeared cheese folded into warm mushrooms melts before the dish reaches the oven, which is how you end up with one cheese mass instead of distinct molten points.
Step 9
Fill and fold. Put about 2 tablespoons of cooled mushrooms on the lower half of each crespella, scatter six or seven cold Fontina dice across the filling, add a teaspoon of bechamel and a pinch of Parmigiano, then fold in half and in half again. Work quickly so the cheese stays cold, and do not overfill: a tight crespella splits at the fold in the oven.
Step 10
Assemble the dish. Butter a shallow baking dish and film the base with bechamel. Lay the triangles in overlapping rows, leaving part of each uncovered, and spoon the remaining bechamel lightly over them without drowning them. Scatter the surface Fontina and Parmigiano and dot with butter. The Parmigiano is structural: it browns at a higher temperature than Fontina and gives the crust its colour.
Step 11
Bake, gratinate and rest. Bake at 375°F (190°C) for 20 to 25 minutes until the surface is bubbling and set. Raise the heat to 425°F (220°C) or switch to the broiler for 2 to 3 minutes, watching without leaving, until the top is deep gold and the exposed edges have crisped. Rest 8 minutes so the Fontina firms enough to hold a portion together.
Plating
Use hot plates, around 150°F (65°C), noticeably hotter than for a tomato based crespella. Fontina sets fast as it cools and a portion meeting a tepid plate loses its flow within a minute.
Serve two or three triangles in a shallow bowl rather than on a flat plate. The bowl holds heat under the crespelle and keeps the small amount of sauce around them instead of letting it spread thin and cool. Set them with the browned crust facing up.
Finish with coarsely ground black pepper and nothing else. No truffle oil, which is synthetic and bullies everything around it, and no parsley. A few browned mushroom slices held back from the pan and tucked against the crespelle tell the diner what is inside before the first cut, and that is the only garnish this dish needs.
Professional Technique
The controlling technique here is the Maillard reaction in fungal tissue, and it depends on beating the moisture. A mushroom is around ninety percent water, released almost immediately once heat reaches it. If the pan is crowded or cool, that water pools, the temperature stalls just above boiling and the mushrooms poach and turn grey. A hot wide pan with space between the slices evaporates it as fast as it appears, so the surface climbs past 300°F (150°C) and browning can start.
The second technique is combining two glutamate sources at different intensities. Fresh mushrooms carry moderate glutamate; dried porcini carry an enormous amount, concentrated by dehydration. Using both builds savoury depth in layers instead of a single flat note, and lets a filling made largely from cremini taste like something gathered on a mountain.
The third is thermal separation of the cheese. Fontina flows at a low temperature and, if warm when it goes in, emulsifies into the mushrooms during assembly and bakes as one homogeneous mass. Cold dice instead reach melting point inside the oven, after the crespella has set around them, so each becomes a discrete molten pocket. That small discipline is the whole textural difference between this and an ordinary cheese bake.
Texture and Moisture Control
The test for the filling is worth doing every time. Press the cooled mushrooms with the back of a spoon on a plate. No liquid should appear at the edge; if any does, the mixture goes back into a hot pan. Mushrooms that seem dry in a warm pan often release more as they cool, which is why the assessment happens cold.
The wrapper has to be thinner than in the tomato versions because it holds a dense filling rather than a fluid one. A thin crespella takes up just enough bechamel to go tender while staying distinguishable from the filling. Too thick and it stays doughy at the centre of the fold where no sauce reaches.
Fontina has a high fat content and a protein network that breaks easily under sustained heat. Held too long or too hot it separates and the oil pools yellow on the surface. The defence is a short bake, a very short gratination, and the Parmigiano on top, which browns faster and lets you reach colour before the Fontina splits.
Professional Mise en Place
Everything except the Fontina dicing and the folding can be done the day before. In service the dish goes from tray to oven with no further intervention, which makes it one of the most reliable primi a small kitchen can run.
Equipment and tools
8 inch nonstick skillet reserved for crespelle
Wide heavy skillet, 12 inches or more, for browning mushrooms
Heavy saucepan and a balloon whisk for the bechamel
Cloth or coffee filter for straining the porcini liquid
Wide tray for cooling the mushrooms quickly
Shallow gratin dish and a fish slice for service
Prepared ahead
Dried porcini soaked and the liquid strained, up to 2 days ahead
Mushroom filling cooked, cooled and refrigerated, up to 2 days ahead
Crespelle cooked and stacked with parchment, up to 2 days ahead
Bechamel made on the day, held warm under a film of milk
Fontina diced and kept cold, up to 4 hours ahead
Service setup
Mushroom filling checked cold for free liquid before folding begins
Fontina out of the refrigerator only as each tray is folded
Trays assembled and refrigerated, brought to room temperature 30 minutes ahead
Oven steady at 375°F (190°C), broiler preheated for the finish
Bowls hot at 150°F (65°C) and a pepper mill at the pass
Chef Tips
Buy Fontina Valle d'Aosta DOP and check for the Matterhorn stamp on the rind. The generic fontina sold in supermarkets, often Danish or Swedish, is a different cheese: milder, rubberier, and it melts into an oily film rather than a cream. If the real thing is unavailable, young Toma Piemontese behaves closer to it than any imitation.
Keep a few of the best browned mushroom slices out of the filling. They cost nothing, they give a garnish that is honestly part of the recipe, and setting them aside forces you to look at the colour you actually achieved in the pan.
Never wash mushrooms under a tap. A brush and a barely damp cloth take off everything that matters, while a rinsed mushroom carries water into the pan that costs five extra minutes to evaporate, during which it overcooks. If a chanterelle is dirty in its gills, split it and brush it out.
If you can only find cremini, use them but double the dried porcini to 1 oz (30 g). Cremini alone give a pleasant but one dimensional flavour, and the extra porcini supply the depth a mixed wild basket would have brought. Still use only 3 tablespoons of the soaking liquid.
Common Mistakes
Washing or soaking the mushrooms. They absorb water immediately and then refuse to brown, no matter how hot the pan is. Brush them or wipe them with a barely damp cloth and accept that a little forest soil is part of the deal.
Crowding the pan. Mushrooms piled up release their water faster than it can evaporate, the pan temperature stalls, and they poach instead of browning. Two or three batches in a wide skillet is the whole difference between roasted and grey.
Using the porcini liquid generously. It tastes wonderful and it is almost entirely water. More than about 3 tablespoons puts back the moisture the browning removed and leaves a wet filling that floods the crespelle.
Folding warm Fontina into warm mushrooms. The cheese starts melting before the dish reaches the oven and bakes as one solid mass. Dice it cold, keep it cold and scatter it at the last moment.
Using too much Fontina. It is a dominant cheese and past about 7 oz (200 g) for this quantity it flattens the mushrooms entirely. The mushrooms are the subject of the dish and the cheese is the setting.
Making the bechamel thick. Between a rich filling and a melting cheese, a dense bechamel is simply glue and makes every portion heavy. Keep it pourable and use it sparingly.
Overbaking or over gratinating. Held too long under high heat, Fontina separates and the oil pools on the surface. Twenty five minutes at 375°F (190°C) plus three under high heat is the limit.
Wine Pairing
Valle d'Aosta Petite Arvine: The valley's own white and the most local pairing available. It has a firm saline finish and a grapefruit edge that cuts straight through the fat of the Fontina, with enough body to avoid being erased by melted cheese.
Alto Adige DOC Pinot Nero: Mountain Pinot Nero is the classic red for mushrooms, for aromatic rather than structural reasons. Its forest floor and dried leaf notes run alongside porcini, while its light tannin and bright acidity keep the palate clean under bechamel.
Valtellina Superiore DOCG: Nebbiolo grown on terraces in the Lombard Alps gives a lean, high acid red with rose and tar aromatics and a firm but fine tannin. It has the grip to handle a dish this rich without weighing it down, and its austerity is a deliberate contrast to the sweetness of the cheese.
Collio Friulano DOC: A fuller white with real substance and a signature bitter almond finish. That bitterness is what makes it work: it resets the palate after each mouthful of Fontina, while the wine's weight and herbal aroma sit beside thyme and browned mushroom.
Teroldego Rotaliano DOC: The choice when you want dark fruit rather than delicacy. Teroldego brings deep blackberry, moderate tannin and a savoury, almost ferrous undertone that matches the meatiness of well browned mushrooms. Pour it with a filling heavy on porcini.
Storage & Reheating
The mushroom filling keeps best and improves after a night in the refrigerator, where the porcini flavour distributes through the mixture. It holds 2 days covered or 2 months frozen, and after thawing it must be brought back to a dry consistency in a hot pan, since freezing ruptures the cells.
Assembled and unbaked, the dish holds 24 hours refrigerated under a cover. Give it 30 minutes at room temperature and add 5 minutes to the bake. Once baked, it keeps 3 days refrigerated in a sealed container. Reheat at 325°F (165°C) under foil for 12 minutes, then uncovered for 5, and add a spoonful of milk to the dish first so the bechamel loosens again.
Do not freeze the dish after baking. Fontina that has melted once and been frozen releases its fat on the second heating and turns oily and grainy. Skip the microwave for the same reason: it drives the cheese past its separation point in seconds.
Nutrition
Per serving, based on 4 servings of about 3 crespelle each:
Calories: 680 kcal
Total Fat: 43 g
Saturated Fat: 24 g
Trans Fat: 0.8 g
Unsaturated Fat: 17 g
Cholesterol: 185 mg
Sodium: 900 mg
Total Carbohydrates: 42 g
Fiber: 3 g
Total Sugars: 9 g
Added Sugars: 0 g
Protein: 28 g
Lactose: 9 g
Principal micronutrients: calcium, phosphorus, selenium, copper, riboflavin, niacin, vitamin D, vitamin B12
These figures are estimates. Fontina and Parmigiano account for most of the saturated fat and almost all of the sodium, and the wine reduces away, leaving no meaningful alcohol in the finished dish.
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