Oven to 3500 f.
Saute half an onion in olive oil or lard. Add garlic, sliced mushrooms, peppers, whatever. Add herbs and spices you like in a red sauce and a small can of tomato paste. Add a bit of liquid if needed, or use tomato sauce if you prefer.
In a bowl knead a pound of hamburger with a half cup almond (or other nut) meal, an egg, celery seed, cayenne, black pepper, etc. Press over oiled pie plate, or casserole, to form a crust. Fill with sauce. Add diced or grated mozzarella and/or other cheeses. Add sliced tomatoes or whatever. Bake on a tray for forty minutes or until the sauce is bubbly under the browned cheese.
Serves four for dinner or one teen for a snack.
Variation: Do a white clam sauce, instead. That would be sauteed onion, garlic, clams, cream, celery seed, cayenne tarragon and gated parmesan, asiago, and so forth. whatever.