olive oil
whole large onion, diced
cloves garlic, minced
Italian sausage
ground beef
can whole tomatoes, with juice
14.5 oz. cans tomato sauce or marinara sauce
Italian seasoning
red pepper flakes
Kosher salt, to taste
Ground pepper, to taste
ziti or mostaccioli, cooked until not quite al dente
tub whole milk ricotta cheese
mozzarella cheese, grated and divided
grated parmesan cheese
whole egg
Fresh minced parsley