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keto pizza sauce in a bowl next to pizza and a pan with meatballs

Keto Pizza Sauce Recipe (Tomato Sauce or Marinara)

  • Total Time: 40 mins
  • Yield: 8-9 cups sauce 1x


Simple and delicious keto pizza sauce recipe. Use this tomato sauce for pasta recipes like spicy, creamy marinara or “pasta” puttanesca (with zoodles).


  • 2 28-ounce cans crushed tomatoes (check for a low-carb brand)
  • 3 tablespoons extra virgin olive oil
  • 1 medium onion, finely diced
  • 2 garlic cloves, minced
  • 1 10-ounce jar roasted red bell peppers, pureed (optional)
  • 1 tablespoon balsamic vinegar
  • 1 tablespoon kosher salt (Diamond Crystal brand) or to taste
  • 1/2 teaspoon black pepper
  • 1/2 tablespoon dried oregano
  • 1/2 tablespoon dried basil


  1. Sweat the onion, garlic and spices in extra virgin olive oil for 5-8 minutes or until softened and translucent.
  2. Blend the roasted red bell peppers until smooth (if you decide to use them) then add to the onions and garlic along with the crushed tomatoes.
  3. Cover and simmer for at least 15 minutes (longer is even better) then serve, refrigerate or freeze.


Net carbs: 5g per 1/2 cup serving.

This recipe makes a decent-sized batch of tomato sauce, so feel free to freeze half to save for other recipes that call for marinara sauce!

  • Prep Time: 10 mins
  • Cook Time: 30 mins
  • Category: Dinner
  • Method: Simmering
  • Cuisine: Italian

Keywords: keto pizza sauce, keto tomato sauce, keto marinara sauce

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