Prepare a rich and comforting meal with minimal effort using your slow cooker. This recipe combines tender chicken breasts with a velvety tomato basil sauce that is perfect for family dinners.

List of ingredients
- 1 can diced tomatoes with Italian herbs, with juice (14oz or 398ml) – provides a chunky texture and base flavor.
- 1 cup marinara sauce – adds thickness and seasoned tomato depth.
- 3 cloves garlic, finely minced – enhances the aromatic profile.
- 1 teaspoon salt – balances the acidity of the tomatoes.
- 1 teaspoon Italian seasoning – adds a blend of classic Mediterranean herbs.
- ยฝ teaspoon dried basil – reinforces the primary herb flavor.
- ยผ teaspoon pepper – provides a subtle heat.
- ยฝ cup heavy whipping cream – creates the creamy, smooth consistency.
- 2 tablespoons cornstarch – acts as a thickening agent for the sauce.
- 4 boneless skinless chicken breasts, about 2 lbs – the main protein source.
- 2 tablespoons finely chopped fresh basil – adds a bright, fresh finish.
- Grated Parmesan cheese, for serving – adds a salty, nutty garnish.
step-by-step instructions
- Combine Base Ingredients: Add the tomatoes, sauce, garlic, salt, Italian seasoning, basil, and pepper to a 4- to 6-quart slow cooker. Stir well to ensure all spices are evenly distributed.
- Prepare Thickener: In a small bowl, whisk together the heavy cream and cornstarch until smooth. Stir this mixture into the slow cooker base to prevent clumping.
- Add Protein: Place the chicken breasts into the slow cooker and press them down so they are fully submerged in the sauce. This ensures even cooking and flavor absorption.
- Slow Cook: Cook on low for 3 to 4 hours. Use a meat thermometer to check that the thickest part of the chicken has reached an internal temperature of 165ยฐF.
- Finish and Serve: Stir in the fresh basil and adjust salt or pepper as desired. Serve immediately topped with grated Parmesan cheese.
Customizing Your Sauce Flavors
Incorporating Red Pepper Flakes for Heat
If you prefer a spicy kick, add a quarter to a half teaspoon of crushed red pepper flakes during the initial mixing stage. This integrates the heat throughout the sauce as it simmers. Adjust the amount based on your family’s tolerance for spice.
Substituting Basil Pesto for Fresh Basil
When fresh basil is unavailable, you can substitute it with two tablespoons of basil pesto. Pesto provides a concentrated burst of basil, garlic, and oil that deepens the sauce. Stir the pesto in at the very end to preserve its bright color.
Adding Fresh Baby Spinach for Nutrition
To incorporate more greens, stir in two cups of fresh baby spinach during the final 30 minutes of cooking. The residual heat will wilt the spinach perfectly without overcooking it. This adds a lovely color contrast and extra nutrients to the dish.
Using Plain Diced Tomatoes
If you cannot find diced tomatoes with Italian herbs, use plain diced tomatoes instead. To compensate for the lost flavor, add an extra half teaspoon of Italian seasoning. This ensures the savory profile remains consistent.
Integrating Sliced Mushrooms
Sautรฉed sliced mushrooms add an earthy depth to the creamy tomato base. Add one cup of sliced cremini or white button mushrooms to the slow cooker at the beginning. They will soften and absorb the tomato juices during the cooking process.
Alternative Protein Options
Using Boneless Skinless Chicken Thighs
Replacing breasts with boneless, skinless chicken thighs is an excellent option for a juicier result. Thighs have a higher fat content, making them more resistant to overcooking. You can use the same cooking times, although thighs often remain tender even if cooked slightly longer.
Adjusting Time for Bone-In Chicken
If you prefer using bone-in chicken breasts, you will need to increase the cooking time. Expect the process to take an additional one to two hours on the low setting. Always verify the internal temperature reaches 165ยฐF before serving.
Using Chicken Meatballs or Sausages
This sauce works well with pre-cooked chicken meatballs or sliced chicken sausages. For best results, brown the meatballs in a pan before adding them to the slow cooker. This creates a caramelized crust that holds up better in the sauce.
Dairy and Thickening Substitutes
Using Evaporated Milk as a Cream Substitute
Evaporated milk is a stable alternative to heavy whipping cream and is less likely to curdle. It provides a similar creaminess while being slightly lighter in fat. Use the same half-cup measurement for a consistent texture.
Replacing Cornstarch with All-Purpose Flour
If you are out of cornstarch, you can use an equal amount of all-purpose flour. Be sure to whisk the flour thoroughly into the cream to avoid any lumps. Flour provides a slightly different, more matte finish to the sauce.
Preventing Low-Fat Dairy Curdling
Avoid using skim milk or low-fat cream, as the acidity from the tomatoes often causes them to separate. If you must use a lower-fat option, stir it in at the very end after the chicken is cooked. This minimizes the time the dairy is exposed to high heat and acid.
Serving and Pairing Suggestions
Pairing with Al Dente Pasta
Serving this chicken over spaghetti, fettuccine, or penne is the most traditional choice. Cook the pasta slightly al dente so it maintains its structure when tossed with the creamy sauce. The starch from the pasta helps the sauce cling to each noodle.
Serving Over Mashed Potatoes or Rice
For a heartier meal, serve the chicken and sauce over a bed of garlic mashed potatoes or steamed jasmine rice. The potatoes absorb the rich cream and tomato flavors beautifully. Rice provides a neutral base that lets the basil shine.
Pairing with a Fresh Side Salad
A crisp garden salad with a light balsamic vinaigrette is the perfect accompaniment. The acidity of the vinaigrette cuts through the richness of the heavy cream. Use mixed greens, cucumbers, and cherry tomatoes for a refreshing contrast.
Using Toasted Garlic Bread for Dipping
Serve the meal with slices of toasted baguette rubbed with garlic and butter. The crunchy bread is ideal for scooping up every last drop of the creamy sauce. Garnish the bread with a sprinkle of parsley for a professional look.
Storage and Reheating Guidelines
Refrigerating Leftovers Safely
Store any remaining chicken and sauce in airtight containers in the refrigerator. This dish stays fresh and flavorful for up to three to four days. Ensure the container is sealed tightly to prevent the sauce from absorbing other fridge odors.
Freezing the Chicken and Sauce
You can freeze this recipe for up to three months by using freezer-safe bags or containers. Allow the food to cool completely before freezing to prevent ice crystals. Thaw the meal in the refrigerator overnight before reheating.
Reheating to Maintain Texture
To reheat, place the chicken and sauce in a saucepan over low heat on the stove. Add a splash of water or chicken broth if the sauce has thickened too much in the fridge. Avoid high heat to prevent the cream from separating.
Cooking Performance and Troubleshooting
Avoiding Overcooked Dry Chicken
The most common issue with slow cooker chicken is overcooking, which leads to a dry texture. Check the internal temperature at the 3-hour mark for smaller breasts. Remove the chicken as soon as it reaches 165ยฐF to ensure maximum juiciness.
Fixing a Sauce That is Too Thin
If the sauce is too thin after cooking, you can simmer it on the high setting for another 30 minutes without the chicken. Alternatively, whisk in a small amount of additional cornstarch slurry. Let it bubble for a few minutes to activate the thickening agent.
Managing Sodium Levels in Store-Bought Sauce
Many marinara sauces are high in salt, which can make the final dish overly salty. Taste the sauce before adding the full teaspoon of salt required by the recipe. Adjust the salt amount based on the specific brand of sauce you use.
Using Slow Cooker Liners for Easy Cleanup
Slow cooker liners are a practical way to eliminate the need for scrubbing the ceramic pot. Simply place the liner in the pot before adding ingredients and lift it out when finished. This is especially helpful when working with thick, creamy sauces.
Searing Chicken Before Slow Cooking
For added depth, sear the chicken breasts in a hot pan with a tablespoon of oil for two minutes per side. This creates a Maillard reaction, adding a rich brown flavor to the meat. Then, transfer the seared chicken into the slow cooker as usual.
Frequently Asked Questions
Can I cook this on the high setting?
Yes, you can cook this on high, but you must monitor it more closely. Check the internal temperature after 2 to 2.5 hours. Cooking on high can sometimes result in a tougher texture compared to the low setting.
What is the best way to measure the internal temperature?
Use a digital meat thermometer and insert the probe into the thickest part of the largest chicken breast. Ensure the probe does not touch the bone or the bottom of the pot. Remove the chicken immediately once it hits 165ยฐF.
Can I use a different type of tomato sauce?
You can use other tomato-based sauces like vodka sauce or a creamy tomato soup. Be mindful that some sauces are sweeter than marinara, which may require more salt or pepper to balance. Avoid using plain tomato paste, as it is too concentrated.
How do I prevent the cream from curdling?
The key is to whisk the cornstarch into the cream before adding it to the slow cooker. The cornstarch stabilizes the dairy proteins against the acidic tomatoes. Additionally, using heavy cream rather than milk significantly reduces the risk of separation.
Can I use a smaller slow cooker?
This recipe is designed for a 4- to 6-quart slow cooker. If you use a smaller pot, ensure it is not filled to the brim, as this can lead to uneven cooking. If the pot is too small, consider halving the recipe to ensure proper heat circulation.
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Slow Cooker Creamy Tomato Basil Chicken
- Total Time: 3 hours 5 minutes
- Yield: 4 servings 1x
- Diet: General
Description
This Slow Cooker Creamy Tomato Basil Chicken is SO easy and flavorful, you wouldn’t believe it only has a few ingredients! The perfect easy dinner recipe!
Ingredients
- 1 can diced tomatoes with Italian herbs (14oz or 398ml)
- 1 cup marinara sauce
- 3 cloves garlic, finely minced
- 1 teaspoon salt
- 1 teaspoon Italian seasoning
- ยฝ teaspoon dried basil
- ยผ teaspoon pepper
- ยฝ cup heavy whipping cream
- 2 tablespoons cornstarch
- 4 boneless skinless chicken breasts (about 2 lbs)
- 2 tablespoons finely chopped fresh basil
- Grated microbial-rennet Parmesan cheese, for serving
Instructions
- Step 1: Add the tomatoes, sauce, garlic, salt, Italian seasoning, basil, and pepper to a 4- to 6-quart slow cooker and stir.
- Step 2: In a small bowl, whisk together the cream and cornstarch and add to the slow cooker.
- Step 3: Add the chicken and press down into the sauce.
- Step 4: Cook on low for 3 to 4 hours, or until a meat thermometer inserted in the thickest part of the chicken reaches 165ยฐF.
- Step 5: Stir in the basil, taste and adjust seasonings as desired, and serve with the Parmesan.
Notes
Boneless, skinless chicken thighs can be used as an alternative to breasts. For more heat, add red pepper flakes to the sauce.
- Prep Time: 5 minutes
- Cook Time: 3 hours
- Category: Main Course
- Method: Slow Cooker
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 210 kcal
- Sugar: 10 g
- Sodium: 1099 mg
- Fat: 3 g
- Saturated Fat: 1 g
- Unsaturated Fat: 2 g
- Trans Fat: 0 g
- Carbohydrates: 16 g
- Fiber: 2 g
- Protein: 29 g
- Cholesterol: 74 mg