Cheesy Macaroni with Beef

large onion, diced

canola oil

salt

optional seasonings: black pepper, oregano, cumin, coriander, chopped garlic, hot smoked paprika, chilli powder—whatever you’re in the mood for (I just used black pepper, garlic and a tablespoon of fish sauce, which gives it depth)

whole tomatoes, pureed in the can with a hand blender or in a blender blender

lean ground beef

box macaroni

each grated cheddar and mozzarella cheeses