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overhead of a slow cooker with crockpot spaghetti sauce recipe in it
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5 from 2 votes

Crockpot Spaghetti Sauce Recipe

This Crockpot Spaghetti Sauce isn't just easy to make. It is also absolutely delicious, and makes your house smell amazing.
Prep Time5 mins
Cook Time3 hrs
Total Time3 hrs 5 mins
Course: Main Course
Cuisine: American
Keyword: easy homemade spaghetti sauce recipe
Servings: 3 cups
Author: Lisa Longley


  • 4 garlic cloves minced
  • 28 ounces crushed tomatoes
  • 15 ounces diced tomatoes drained
  • 2 tablespoons tomato paste
  • 2 teaspoons granulated sugar read here about why we add sugar to spaghetti sauce
  • 1 teaspoon kosher salt
  • 1 teaspoon dried oregano
  • 1 teaspoon dried basil
  • 1/8 teaspoon crushed red pepper flakes optional
  • dash of freshly ground black pepper


  • Combine all of the ingredients in your slow cooker and cook on low for three to four hours. Taste at the end and adjust the sugar, salt, or pepper as needed.
  • Use immediately or store in the refrigerator for 4 to 5 days.


The diced tomatoes make for a nice chunky sauce.  If your family doesn't dig on chunks, replace the diced tomatoes with a second can of crushed tomatoes.