Gather all your ingredients. Makes it easier. You do not have to search, measure, or cut while you are busy.
San Marzano tomatoes have a unique flavor. These are not technically San Marzano. These are close for half the price. It'll do for what I want.
Heat up your oil over medium heat.
Sauté the onions for about 3 minutes.
Add in the garlic, sauté for 2 more minutes.
Throw in the tomatoes, salt and pepper to taste.
Bring to a boil, simmer uncovered for 40 minutes.
All done. I hit mine with a stick blender. That is optional. Now you can make lasagna, or my lasagna roll ups in my other guide.