Method

  1. Mix and rest the crêpe batter

    Melt 30 g of unsalted butter in a small pan, then let it cool slightly. Whisk 90 g of all-purpose flour with half of 2 g of fine salt in a mixing bowl. Add 240 ml of whole milk and 2 large eggs, whisk until smooth, then whisk one-third of melted butter into the batter. Cover the bowl and let the batter rest for 20 minutes so the flour hydrates and the crêpes bend without cracking. While the batter rests, slice 285 g of cremini mushrooms, finely chop 60 g of shallot, and grate 115 g of Gruyère cheese for the filling; reserve remaining butter and salt for later steps. Do not taste the raw batter, and wash any utensil that touched it before using that utensil with cooked crêpes.

    20:00

  2. Cook the mushroom and spinach filling

    Dry browned mushroom and spinach filling with softened Gruyère in a skillet

    Heat a large skillet over medium-high heat and melt half of remaining butter. Add 285 g of cremini mushrooms in an even layer and cook for 8 to 10 minutes, stirring occasionally, until browned and the skillet looks dry; start checking at 8 minutes. Add 60 g of shallot and cook until softened and fragrant. Add 115 g of baby spinach and stir until fully wilted with no liquid pooling. Remove the skillet from the heat, stir in 15 g of Dijon mustard, remaining salt, 0.5 g of black pepper, and 115 g of Gruyère cheese, then spread the filling on a plate so it stops steaming heavily and stays firm enough to fold.

    08:00

  3. Cook four thin crêpes

    Fully cooked thin crêpe with pale golden spots in a nonstick skillet

    Wipe a 25 cm (10 in) nonstick skillet or crêpe pan clean and set it over medium heat. Brush it lightly with some reserved butter. Whisk the rested batter, pour in one-quarter, and immediately tilt the skillet in a smooth circle to form a thin round about 25 cm (10 in) wide. Cook for 60 to 75 seconds, until the surface has no wet sheen and the edges release, then flip with a clean spatula and cook the second side briefly until fully set with pale golden spots. Transfer to a clean plate and cover with a clean towel while cooking the remaining three crêpes, adjusting the heat if they brown before the tops set.

    01:00

  4. Fold and crisp the envelopes

    Savory crêpe partly folded around mushroom, spinach, Dijon, and Gruyère filling before crisping

    Lay one warm crêpe on the work surface and place one-quarter of filling in a compact 11 x 6 cm (4 1/2 x 2 1/2 in) rectangle at the center. Fold the left and right edges inward over the filling, fold the bottom edge up, then bring the top edge down to close the parcel like an envelope. Repeat with the remaining crêpes. Melt reserved butter in the same skillet over medium heat. Working in batches if necessary, place the parcels seam-side down in a single layer without touching and cook for 2 to 3 minutes until golden and sealed; start checking at 2 minutes. Turn carefully, cook the second side until equally crisp and the center is hot, and serve immediately.

    02:00
Cook's noteKeep the filling fairly dry and shape it into a neat rectangle. A wet or scattered filling pushes against the folds and makes the envelope harder to seal.

Smart Substitutions

  • No Gruyère? Use Comté, Emmental, or a mature Swiss-style cheese that melts smoothly.
  • No cremini mushrooms? Use white button or chestnut mushrooms and cook them until the skillet is dry.
  • No baby spinach? Use finely sliced chard leaves and cook until tender with no moisture pooling.
  • No Dijon mustard? Use whole-grain mustard or a mild prepared mustard for the same sharp balance.

Tips and Variations

  • Treat the first crêpe as the heat check: lower the burner if it browns before the top loses its wet sheen.
  • Keep cooked crêpes under a clean towel during the short cooking sequence so the edges stay flexible enough to fold.
  • Do not overfill the center; a low, compact rectangle gives the flaps enough overlap to stay closed in the skillet.

What Went Wrong?

  • Crêpes tear while folding The batter may be too thick or the crêpes may be overcooked. Whisk in a small splash of milk and cook the next one just until set.
  • Filling leaks from the parcel Cook the mushrooms and spinach longer so the skillet is dry, then use a smaller compact mound with clear space around the fold lines.
  • Crêpes stick to the skillet Let the skillet heat evenly, use a thin film of butter, and wait until the edges release before trying to flip.
  • Envelope will not stay closed Fold while the crêpe is still flexible, overlap the flaps more firmly, and begin crisping seam-side down so the weight seals it.

Nutrition Estimate

Calories360
Protein20 g
Carbs27 g
Fat20 g
  • Fiber: 3 g per serving
  • Sodium: 530 mg per serving

Nutrition disclaimer:This recipe is provided for general cooking information only. Nutrition values are estimates and may vary by ingredients, brands, preparation methods, and serving sizes. Check ingredient labels and follow appropriate food-safety practices. This content is not medical, dietary, allergy, or professional food-safety advice.

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FAQ

Can I replace the wheat flour with buckwheat flour?Not as a direct one-for-one swap. Buckwheat changes the batter structure and hydration, so use a recipe formulated specifically for buckwheat galettes when you want that flavor.