Making homemade marinara sauce is easier and cheaper than buying Rao's, despite its high ranking in taste tests. The most challenging step is chopping the onion, but this can be simplified using a grater, food processor, mandolin, or chopper. The recipe starts by sautéing minced garlic and finely chopped onion in olive oil with salt and pepper, optionally adding oregano or Italian seasoning. Cooking for five minutes until the onions are translucent prevents the garlic from burning. The onions' moisture prevents burning.