Marinara sauce is a simple tomato-based sauce made with garlic, onions, and herbs like basil and oregano. To make marinara sauce, sauté garlic and onions, then add crushed tomatoes and simmer until thickened. It’s commonly used as a pasta sauce, pizza topping, or dip for breadsticks. This homemade marinara sauce can be prepared in under 30 minutes and customized with extra seasonings to taste.