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Square photo of crockpot marinara.

Crockpot 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 Main Course
Cuisine American, Italian
Keyword sauce
Prep Time 10 minutes
Cook Time 2 hours
Total Time 2 hours 10 minutes
Servings 12
Calories 67kcal



  • 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. Add the sweetener, Italian seasoning, red pepper flakes, salt, and pepper.
  • 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, tomato paste and balsamic vinegar. Cook for 2 hours on high or 4 hours on low.


Calories: 67kcal | Carbohydrates: 13g | Protein: 3g | Fat: 2g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Sodium: 608mg | Potassium: 471mg | Fiber: 3g | Sugar: 8g | Vitamin A: 401IU | Vitamin C: 14mg | Calcium: 59mg | Iron: 2mg