https://www.thespruceeats.com/white-and-red-sauce-lasagna-recipe-995925 Ingredients For the mushroom sauce: 1 small pouch dried porcini mushrooms (a handful) 2 cups chicken stock or water (use water for vegetarian preparation) 1/4 cup extra virgin olive oil ( EVOO) 1/4 pound pancetta, diced (omit for vegetarian preparation) 6 portabella mushroom […] ... and cover it with sauce and cheese. (<