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+ servings

Slow Cooker Marinara

This is simply the best Slow Cooker Marinara! It is perfect for an easy meal at the end of a busy day. You can also freeze it to have it on hand when you need it.
Course Side Dish
Cuisine Healthy
Prep Time 15 minutes
Cook Time 2 hours 20 minutes
Total Time 2 hours 35 minutes
Servings 12
Calories 45kcal
Author Wendy Polisi


  • ½ tablespoon avocado oil
  • 1 onion diced
  • ½ teaspoon honey or Swerve
  • 1 tablespoon minced garlic
  • 1 tablespoon Italian seasoning
  • ½ teaspoon red pepper flakes
  • 1 teaspoon sea salt
  • 28 ounces fire roasted tomatoes
  • 30 ounces chopped tomatoes
  • ¼ cup tomato paste
  • 2 tablespoons balsamic vinegar
  • 1 teaspoon sea salt
  • 1 teaspoon fresh ground black pepper


  • Heat a skillet to medium high heat. Add avocado oil and allow to heat for a minute. Add onion and cook for 8 to 10 minutes. Drizzle with honey Italian seasoning, red pepper flakes and salt. Reduce heat to low and cook for 10 more minutes. Add garlic and cook for one more minute.
  • Transfer to a slow cooker and stir in fire roasted tomatoes, chopped tomatoes, tomato paste and balsamic vinegar. Season with salt and pepper and cook for 2 hours on high.


Calories: 45kcal | Carbohydrates: 8g | Protein: 1g | Sodium: 636mg | Potassium: 210mg | Fiber: 1g | Sugar: 4g | Vitamin A: 465IU | Vitamin C: 9.9mg | Calcium: 54mg | Iron: 1.4mg