Ingredients: puff pastry, 2 onions, thyme, 150 grams mushrooms, 3 eggs, 100 ml milk, grated cheese, 1 tablespoon mustard, salt, pepper, nutmeg, 4 tomatoes,

Preheat the oven to 200 degrees. Coat a pie tin with a puff pastry. Bake in hot oil on medium high heat 2 sliced onions with thyme until golden brown. Add 150 grams sliced mushrooms stir fry until the mushrooms have softened. Beat 3 eggs with 100 ml milk and grated cheese, 1 tablespoon mustard, salt, pepper and nutmeg. Cut 4 tomatoes into slices. Sprinkle the bottom of the puff pastry with grated cheese. Put in the onion-mushroom mixture. Put in one layer of tomato slices. Then put the other half of the onion-mushroom mixture in and cover with a layer of tomato slices. Pour the egg-mixture in and sprinkle grated cheese over in. Put the pie tin about 35 minutes in the preheated oven. Serve with a salad. Enjoy!