Slow Cooker Tomato Sauce

jars of tomato sauce

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A no-fuss slow cooker tomato sauce. This sauce takes only a few minutes to prep and a few hours in the slow cooker!


  • 2.5 ounces salt pork, chopped (see note)
  • 1 medium white or yellow onion, chopped
  • 4 large garlic cloves, chopped
  • 2 (28-ounce) cans crushed tomatoes
  • 1 cup vegetable stock
  • 2 teaspoons Italian seasoning
  • 1 teaspoon kosher salt (see note)
  • 2 tablespoons chopped fresh parsley


  1. Combine everything except the parsley in a slow cooker. Cover and cook on high for four hours.
  2. Puree the sauce using an immersion blender until smooth. Stir in the fresh herbs.
  3. Store the tomato sauce for up to a week in the refrigerator or store in the freezer for several months.


  • Look for salt pork near the meat counter at the grocery store.
  • Because the sauce is pureed the vegetables just need a rough chop. If you like a chunkier sauce, chop the vegetables smaller and skip the pureeing step in the recipe.
  • The recipe calls for 1 teaspoon of salt, but depending on how you use the sauce you may want to season it a little more. I left it a little under-seasoned since I use the sauce in different recipes that may have extra salt.