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Slow Cooker Chicken in Tomato Sauce

Slow Cooker Chicken in Tomato Sauce

Sometimes simple is best! This Slow Cooker Chicken in Tomato Sauce uses simple ingredients yet delivers maximum flavors!
Prep Time 15 minutes
Cook Time 4 hours
Total Time 4 hours 15 minutes
Servings 4 servings
Calories 412kcal


  • 1 ½ pounds boneless skinless chicken breasts (or tenders would work too)
  • 3 tablespoons butter (divided)
  • 1 tablespoon olive oil
  • 1 teaspoon garlic powder
  • ½ teaspoon salt
  • ¼ teaspoon pepper
  • 28 oz fire-roasted crushed tomatoes (1 can)
  • 14 oz fire-roasted diced tomatoes (1 can)
  • 8 oz tomato sauce (1 can)
  • 1 teaspoon Italian seasoning blend (see notes)
  • 1 large zucchini
  • Fresh basil


  • Heat skillet (or multi-cooker) to medium high heat
  • Melt 1 tablespoon butter with 1 tablespoon olive oil
  • Season chicken with garlic powder, salt and pepper and cook on each side until lightly browned (about 3-4 minutes)
  • Transfer chicken to slow cooker
  • Add cans of tomatoes/tomato sauce, Italian seasoning and remaining two tablespoons of butter
  • Cover and cook on high for 3-4 hours or low for 6-8 until chicken is cooked through (reduce time if using tenders 2-3 hours on high or 4-6 on low)
  • Taste sauce and add more seasonings if desired
  • Spiralize zucchini and add to slow cooker
  • Return cover and let cook in sauce until softened, about 10-15 minutes
  • Garnish with fresh slivered basil


  • Here is the spiralizer I use. You could also serve with pasta or with sliced sautéed zucchini.
  • If the sauce is too acidic for your liking, you can stir in a couple of tablespoons of cream or milk.
  • I've made this with and without the addition of the Italian seasoning and like both versions, but possibly prefer the one without because I LOVE tomato flavors.


Calories: 412kcal | Carbohydrates: 24g | Protein: 41g | Fat: 17g | Saturated Fat: 6g | Cholesterol: 131mg | Sodium: 1279mg | Potassium: 1535mg | Fiber: 6g | Sugar: 14g | Vitamin A: 1480IU | Vitamin C: 34.8mg | Calcium: 131mg | Iron: 4.7mg