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Easy Slow Cooker Tomato Sauce

Marybeth Feutz
Make the most of your garden-fresh tomatoes with this Easy Slow Cooker Tomato Sauce. Make a few big batches now and freeze it to use all winter long.
Prep Time 10 mins
Cook Time 4 hrs
Total Time 4 hrs 10 mins
Course Side
Servings 20 cups


  • 6 pounds tomatoes
  • 1/4 cup sugar
  • 6 cloves garlic minced
  • 3 Tablespoons Italian seasoning
  • 2 Tablespoons extra-virgin olive oil


  • Quarter tomatoes and cut out the core. Chop tomatoes into roughly equal sizes and place in a 6-quart slow cooker.
  • Add sugar, garlic, Italian seasoning, and olive oil to the slow cooker.
  • Stir to mix.
  • Cover and cook on high for 1 hour.
  • When tomatoes are soft, use an immersion blender to puree the tomatoes into a sauce.
  • Continue cooking on high, uncovered, for 2-4 hours to let the sauce thicken.
  • Use as you would use store-bought tomato sauce.
  • Freeze or can leftovers.
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