Slow Cooker Italian Meatballs

This Slow Cooker Italian Meatballs recipe is simple and full of Italian flavor but with an extra special addition.

Course Main Course
Cuisine Beef, Crock Pot, Gluten-Free, Paleo, Whole30
Prep Time 15 minutes
Cook Time 5 hours
Total Time 5 hours 15 minutes
Servings 6
Calories 779 kcal


  • 2 lb grass-fed ground beef
  • 1/3 cup calf’s liver frozen and grated, optional
  • 1/2 red bell pepper diced small
  • 1 red bell pepper sliced thinly
  • 1 bunch green onions thinly sliced
  • 6 cloves garlic minced
  • 1 cup olives any kind, chopped
  • 1 egg
  • 4 tbsp Italian seasoning
  • 1 tbsp smoked paprika
  • 1 tsp ground black pepper
  • 1 tsp sea salt
  • 1 tbsp avocado oil
  • 24 oz pasta sauce
  • 14 oz diced tomatoes


  1. Prepare the vegetables: chop ½ of a red bell pepper into small dice and slice the other bell pepper thinly; slice the green onions thinly (white + green parts); chop the olives; mince the garlic.
  2. In a large bowl, add the ground beef, vegetables, egg and spices together.
  3. Grate frozen liver into the beef mixture. You can add as much as you’d like, but I went with a small amount (1/2 cup) to start. Omit liver if you’d prefer.
  4. Mix all the ingredients to combine. Shape into balls. I made them fairly large and got 20 total.
  5. Heat a skillet to medium and add 1 tablespoon avocado oil. Brown the meatballs on all sides and add to the crock pot. This took two batches.

  6. Sprinkle the sliced red bell pepper on top of the meatballs and pour pasta sauce and diced tomatoes on top.
  7. Cook on low for 5-6 hours.
  8. Serve with spaghetti squash, over sautéed kale, or just as is.
Nutrition Facts
Slow Cooker Italian Meatballs
Amount Per Serving
Calories 779 Calories from Fat 504
% Daily Value*
Fat 56g86%
Saturated Fat 19g95%
Cholesterol 220mg73%
Sodium 2185mg91%
Potassium 1640mg47%
Carbohydrates 23g8%
Fiber 8g32%
Sugar 12g13%
Protein 46g92%
Vitamin A 5630IU113%
Vitamin C 80.7mg98%
Calcium 214mg21%
Iron 10.4mg58%
* Percent Daily Values are based on a 2000 calorie diet.