There are chicken dinners that are ordinary, and then there is slow cooker creamy tomato basil chicken—the kind of rich, velvety, deeply flavorful dish that tastes like it came from an Italian restaurant. Tender, juicy chicken breasts or thighs simmer for hours in a luscious tomato cream sauce infused with garlic, onion, and fresh basil. The result is a meal that is both elegant and effortless, perfect for busy weeknights or cozy Sunday dinners.
The beauty of this recipe is its simplicity. You simply season the chicken, sear it briefly (optional but recommended), then let the slow cooker work its magic. The sauce—made from crushed tomatoes, heavy cream, garlic, and basil—thickens and develops deep flavor as it cooks. The chicken emerges fall-apart tender, and the sauce is perfect for sopping up with crusty bread or tossing with pasta.
This slow cooker creamy tomato basil chicken is perfect for serving over pasta, rice, or mashed potatoes. It is also low-carb and keto-friendly if you skip the pasta and serve with zucchini noodles or cauliflower rice.
Why You Will Love This Slow Cooker Creamy Tomato Basil Chicken
· Rich, velvety tomato cream sauce: Deeply flavorful.
· Tender, juicy chicken: Falls apart with a fork.
· Hands-off cooking: The slow cooker does all the work.
· Great for weeknights and special occasions.
· Low-carb and keto-friendly options.
· Freezer-friendly: Make a double batch and save one for later.
· Customizable: Add mushrooms, spinach, or different herbs.
Ingredients
Here is everything you need for slow cooker creamy tomato basil chicken:
For the Chicken:
· 2 pounds boneless, skinless chicken breasts or thighs
· 1 teaspoon salt
· ½ teaspoon black pepper
· 1 teaspoon garlic powder
· 1 teaspoon Italian seasoning
· 2 tablespoons olive oil (for searing, optional)
For the Creamy Tomato Basil Sauce:
· 1 can (28 ounces) crushed tomatoes (or 2 cans of 15 ounces each)
· ½ cup low-sodium chicken broth
· 4 cloves garlic, minced
· 1 small yellow onion, finely diced
· 1 teaspoon dried oregano
· ½ teaspoon red pepper flakes (optional, for heat)
· 1 cup heavy cream
· ½ cup freshly grated Parmesan cheese
· ¼ cup fresh basil, chopped (plus more for garnish)
Optional Add-Ins:
· 8 ounces cremini mushrooms, sliced
· 2 cups fresh spinach (add at the end)
· 1 zucchini, diced
For Serving:
· Cooked pasta, rice, or mashed potatoes
· Crusty bread
Step-by-Step Instructions
Step 1: Season the Chicken
Pat the chicken dry with paper towels. In a small bowl, combine the salt, pepper, garlic powder, and Italian seasoning. Season the chicken on all sides.
Step 2: Sear the Chicken (Optional but Recommended)
Heat the olive oil in a large skillet over medium-high heat. Sear the chicken for 2 to 3 minutes per side, until lightly browned. This step adds flavor but can be skipped. Transfer the chicken to the slow cooker.
Step 3: Make the Sauce Base
In a medium bowl, whisk together the crushed tomatoes, chicken broth, minced garlic, diced onion, dried oregano, and red pepper flakes (if using).
Step 4: Add Sauce to Slow Cooker
Pour the sauce mixture over the chicken in the slow cooker. Stir gently to combine.
Step 5: Slow Cook
Cover the slow cooker with the lid. Cook on LOW for 4 to 5 hours (for breasts) or 5 to 6 hours (for thighs), until the chicken is tender and cooked through (internal temperature of 165 degrees Fahrenheit).
Step 6: Add the Cream, Parmesan, and Basil
Carefully remove the chicken from the slow cooker and set aside. Stir the heavy cream, Parmesan cheese, and fresh basil into the sauce. Taste and adjust seasoning.
Step 7: Return Chicken to Slow Cooker
Return the chicken to the slow cooker and nestle it into the sauce. Let it warm through for 5 to 10 minutes.
Step 8: Serve
Serve the creamy tomato basil chicken over pasta, rice, or mashed potatoes. Garnish with additional fresh basil.
Cooking Tips and Pro Tips for Best Results
· Use chicken thighs for extra juiciness: Boneless, skinless chicken thighs are more forgiving and stay juicier than breasts.
· Do not skip searing (optional but recommended): Searing adds deep, savory flavor.
· Add cream at the end: Adding cream too early can cause it to separate. Stir it in during the last 15 to 30 minutes.
· Use freshly grated Parmesan: Pre-shredded cheese contains anti-caking agents that prevent smooth melting.
· Fresh basil makes a difference: Dried basil works, but fresh basil adds a bright, aromatic finish.
· Do not lift the lid: Each time you lift the lid, heat escapes and adds 15 to 20 minutes of cooking time.
Variations and Substitutions
· Add spinach: Stir in 2 cups of fresh spinach at the end until wilted.
· Add mushrooms: Add 8 ounces of sliced cremini mushrooms with the sauce.
· Chicken tomato basil with pasta: Serve over fettuccine or penne.
· Low-carb or keto: Serve over zucchini noodles or cauliflower rice.
· Spicy creamy tomato chicken: Double the red pepper flakes or add a diced jalapeño.
· Dairy-free: Use full-fat coconut milk and dairy-free Parmesan.
· Gluten-free: This recipe is naturally gluten-free.
Serving Suggestions
This slow cooker creamy tomato basil chicken is delicious served:
· Over pasta: Fettuccine, penne, or spaghetti.
· Over rice: White, brown, or cauliflower rice.
· Over mashed potatoes: The creamy sauce is perfect over potatoes.
· With crusty bread: For sopping up every drop of sauce.
· With roasted vegetables: Broccoli, asparagus, or green beans.
Storage and Reheating Instructions
Refrigerator Storage
Store leftovers in an airtight container in the refrigerator for up to 5 days.
Freezer Storage
This dish freezes well for up to 2 months. Cool completely, then transfer to a freezer-safe container. Thaw overnight in the refrigerator before reheating.
Reheating Instructions
· Stovetop method (best): Reheat in a skillet over medium-low heat, adding a splash of broth or cream if needed.
· Microwave method: Heat individual portions for 60 to 90 seconds.
· Slow cooker method: Reheat on LOW for 1 to 2 hours.
Nutritional Information
Approximate per serving (based on 6 servings, with chicken breasts and heavy cream):
· Calories: 480
· Protein: 38g
· Fat: 28g
· Saturated Fat: 14g
· Carbohydrates: 16g
· Fiber: 3g
· Sugar: 8g
· Sodium: 680mg
· Vitamin A: 25% DV
· Vitamin C: 20% DV
· Calcium: 15% DV
· Iron: 15% DV
Note: Nutritional values are estimates and will vary based on specific ingredients and portion sizes.
Frequently Asked Questions
Can I use crushed tomatoes with basil?
Yes. Crushed tomatoes with basil add extra flavor.
Can I use half-and-half instead of heavy cream?
Yes, but the sauce will be thinner and less rich. Heavy cream is recommended for the best texture.
Why is my sauce grainy?
Grainy sauce can happen if the Parmesan is added too quickly or the heat is too high. Add the cheese gradually over low heat.
Can I add vegetables to this dish?
Absolutely. Spinach, mushrooms, and zucchini are excellent additions.
Is this recipe gluten-free?
Yes, as written.
Can I make this in an Instant Pot?
Yes. Use the sauté function to brown the chicken. Add the sauce ingredients (except cream and Parmesan). Pressure cook on HIGH for 10 minutes (breasts) or 12 minutes (thighs). Natural release for 10 minutes. Stir in cream and Parmesan.
How do I get a thicker sauce?
If the sauce is too thin, remove the chicken and simmer the sauce on the stovetop for 5 to 10 minutes to reduce.
Can I double this recipe?
Use a 7-quart or larger slow cooker. Cooking time remains the same.
Final Thoughts
Slow cooker creamy tomato basil chicken is the perfect combination of convenience and elegance. The rich, velvety tomato cream sauce, tender chicken, and fresh basil create a dish that tastes like it came from a restaurant, yet it comes together with minimal effort. Serve it over pasta, rice, or mashed potatoes for a complete, satisfying meal.
This recipe is a weeknight hero and a crowd-pleaser. It is also endlessly customizable—add spinach, mushrooms, or a pinch of red pepper.
So season that chicken, pour in that tomato sauce, and let your slow cooker work its magic. That is the beauty of slow cooking—simple ingredients, patient heat, and a whole lot of deliciousness.