The Secret of Perfect Mushroom Lasagna? Wildness

Name: The Secret of Perfect Mushroom Lasagna? Wildness
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: European, American, Mediterranean
Ingredients: 300g mix of wild mushrooms (Russula, Chanterelles, Tawny Milkcaps); 1 small onion (finely chopped); 2 cloves of garlic (finely chopped); Béchamel sauce (recipe below or use store-bought); Lasagna sheets (dry, enough for 2-3 layers); Cheese mix (Mozzarella, Fontina, Parmesan - about 1 cup total); Olive oil (1 tbsp); Salt and pepper (to taste); 2 tbsp butter; 2 tbsp flour; 2 cups milk; Nutmeg; Salt and pepper