This small-batch slow-roasted tomato sauce is almost laughably easy—the oven does all the work while you go about your day. It transforms simple ingredients into a deeply flavored, freezer-friendly sauce that tastes like August in a jar.
Don’t rush the temperature—stick to 300°F to avoid burning. Keep garlic whole to prevent burning. Use all pan juices and browned bits for maximum flavor. Let tomatoes cool at least 10 minutes before blending to avoid pressure buildup. For a thinner sauce, add water or broth when reheating; for thicker, simmer after blending. The sauce thickens slightly as it cools. Flavor deepens after a day or two in the fridge.
Keywords: small-batch tomato sauce, slow-roasted tomato sauce, freezer tomato sauce, homemade tomato sauce, easy tomato sauce, Roma tomato sauce, vegan tomato sauce, gluten-free tomato sauce