Ultimate Mushroom Lasagna Recipe! Cooking is a family activity for Rita and Giovanna and here they are making their favourite mushroom lasagna. For the dough: 300g 00 flour, 3 eggs For the béchamel: 1 litre semi skimmed milk, 80g each of butter and flour, plenty of nutmeg For the mushrooms: a 750g mixture, including porcini if you can, 2 garlic cloves, 1/2 a glass of white wine, olive oil (not too much), salt To assemble: 250g mozzarella, 50g Parmigiano or similar. | Pasta Grannies