Want to make a delicious red sauce with just three ingredients? Toss a chopped onion into a saucepan with a can of chopped tomatoes and a combination of olive oil and butter. Simmer it on low for 45 minutes. It’s fantastic. (Thank you Food 52, for the inspiration.) I put my sauce on rice, but you can use it on pasta, of course, or as the saucy element in chicken cacciatore, in a stuffed-pepper mix, or in a thousand different dishes.