If you’re craving a dish that feels like a warm hug from the inside out, you absolutely have to try this Slow Cooker Tomato Basil Chicken Recipe. It combines juicy, tender chicken with the rich flavors of crushed tomatoes and the fresh, vibrant aroma of basil, all slowly infused together to create a meal that’s as comforting as it is delicious. Whether you’re new to slow cooking or a seasoned pro, this recipe will quickly become one of your favorites for busy weekdays or lazy weekends.

Ingredients You’ll Need
The beauty of this Slow Cooker Tomato Basil Chicken Recipe is in its simplicity. Each ingredient plays an essential role, either adding depth of flavor, a perfect texture, or a burst of color that makes the dish look as good as it tastes.
- 4 boneless skinless chicken breasts (about 2 lbs): Choose fresh, plump breasts for the best tenderness and flavor.
- 1 can (28 oz) crushed tomatoes: The rich tomato base brings sweetness and acidity that balances the dish.
- 1 cup fresh basil leaves (roughly chopped): Fresh basil adds a fragrant, bright note that transforms the sauce completely.
- 4 cloves garlic (minced): Garlic gives a pungent, aromatic kick that’s essential in every savory dish.
- 1 medium onion (diced): Onions add subtle sweetness and help build the savory foundation of the sauce.
- 2 tablespoons olive oil: Used for searing, olive oil enhances flavor and helps lock in moisture.
- 1 teaspoon dried oregano: This herb gives an earthy, slightly peppery depth to the tomato sauce.
- 1/2 teaspoon red pepper flakes (optional): For those who like a little heat, they add a gentle spicy warmth.
- Salt and freshly ground black pepper to taste: The perfect seasoning duo to brighten and balance every bite.
How to Make Slow Cooker Tomato Basil Chicken Recipe
Step 1: Prepare and Season the Chicken
Begin by trimming any excess fat off your chicken breasts—this helps keep the dish lean but juicy. Give them a generous sprinkle of salt and freshly ground black pepper for that well-rounded taste that you’ll appreciate in every bite.
Step 2: Sear the Chicken for Extra Flavor
Heat olive oil in a skillet over medium-high heat. Quickly sear the chicken breasts on both sides until they develop a golden-brown crust, about 2 to 3 minutes per side. This step might be optional, but trust me, it adds an incredible depth of flavor that will elevate the whole dish.
Step 3: Layer Ingredients in the Slow Cooker
Transfer the beautifully seared chicken breasts to your slow cooker. Then, in the same skillet, sauté the onions and garlic just until they become fragrant and translucent—this only takes about 3 to 4 minutes. Pour this aromatic mixture over the chicken.
Step 4: Add Tomatoes and Herbs
Next, pour the crushed tomatoes over the chicken and sautéed onion mixture. Sprinkle in the dried oregano and, if you want a touch of spice, the red pepper flakes. Give everything a gentle stir to combine the flavors, then cover the slow cooker.
Step 5: Cook Low and Slow
Set your slow cooker on low for 6 to 8 hours, or if you’re short on time, cook it on high for 3 to 4 hours. The chicken will be perfectly tender and juicy when it reaches an internal temperature of 165°F (74°C), soaking in all those rich flavors.
Step 6: Finish with Fresh Basil
About 30 minutes before you’re ready to serve, stir in the fresh basil leaves. This final touch wakes up the entire dish and adds a fresh burst of color and flavor that turns it into something truly special.
How to Serve Slow Cooker Tomato Basil Chicken Recipe

Garnishes
To make your Slow Cooker Tomato Basil Chicken Recipe feel like a restaurant-served meal, garnish with additional fresh basil leaves or a light drizzle of good-quality olive oil. A sprinkle of freshly grated Parmesan cheese is also a fantastic finishing touch that complements the tomato sauce beautifully.
Side Dishes
This dish pairs wonderfully with a variety of sides. Think creamy mashed potatoes, fluffy rice, or even a hearty pasta to soak up all that delicious tomato basil sauce. A crisp green salad or sautéed vegetables can add a fresh crunch to balance the meal.
Creative Ways to Present
For a fun twist, serve the chicken over a bed of polenta or alongside roasted garlic bread for dipping. You might also enjoy shredding the chicken and stuffing it into warm pita pockets with fresh greens for a casual meal that’s full of vibrant flavors.
Make Ahead and Storage
Storing Leftovers
After enjoying this delightful Slow Cooker Tomato Basil Chicken Recipe, store any leftovers in an airtight container in the refrigerator. It will stay fresh for up to 3 days, making for easy lunch or dinner options during a busy week.
Freezing
You can freeze leftover chicken and sauce in a freezer-safe container or heavy-duty freezer bag for up to 3 months. Just be sure to cool the dish completely before freezing to preserve its flavors and texture.
Reheating
To reheat, gently warm the chicken and sauce on the stovetop over low heat or in the microwave until just heated through. Avoid overheating as this can dry out the chicken—adding a splash of water or broth can help keep it moist.
FAQs
Can I use chicken thighs instead of breasts in this recipe?
Absolutely! Chicken thighs work wonderfully in the Slow Cooker Tomato Basil Chicken Recipe and tend to stay even juicier with slow cooking. Just adjust the cooking time slightly if using bone-in thighs to ensure they’re fully cooked.
Is it necessary to sear the chicken before slow cooking?
Searing is optional but highly recommended because it adds a lovely caramelized flavor and improves the overall depth of the dish. However, if you’re short on time, you can skip this step and still end up with delicious results.
Can I make this recipe vegan or vegetarian?
While this recipe centers on chicken, you could substitute with hearty vegetables like portobello mushrooms or tofu for a vegetarian twist. Keep the tomato and basil base as is for a delightful flavor combo.
How fresh does the basil need to be?
Fresh basil is key for that bright, aromatic lift in this recipe. Dried basil just won’t provide the same vibrant flavor, so try to use fresh leaves, roughly chopped, especially when you stir them in at the end.
Can I double this recipe for a larger gathering?
Yes! This Slow Cooker Tomato Basil Chicken Recipe scales well. Just make sure your slow cooker is large enough to hold all the ingredients, and adjust the cooking time slightly if needed to ensure the chicken cooks evenly.
Final Thoughts
This Slow Cooker Tomato Basil Chicken Recipe is such a joy to make and even more satisfying to eat. With minimal effort and simple ingredients, you can create a comforting, flavorful meal that everyone will love. Give it a try—you might find yourself reaching for this recipe again and again!
Print
Slow Cooker Tomato Basil Chicken Recipe
- Prep Time: 15 minutes
- Cook Time: 6 hours
- Total Time: 6 hours 15 minutes
- Yield: 4 servings
- Category: Main Course
- Method: Slow Cooking
- Cuisine: Italian
Description
This Slow Cooker Tomato Basil Chicken recipe is a flavorful and easy-to-make dish featuring tender chicken breasts simmered in a rich tomato sauce infused with fresh basil, garlic, and oregano. Perfect for a hearty and comforting meal with minimal hands-on cooking, this dish allows you to prepare a delicious dinner with the convenience of slow cooking.
Ingredients
Chicken
- 4 boneless skinless chicken breasts (about 2 lbs)
Tomato Basil Sauce
- 1 can (28 oz) crushed tomatoes
- 1 cup fresh basil leaves, roughly chopped
- 4 cloves garlic, minced
- 1 medium onion, diced
- 2 tablespoons olive oil
- 1 teaspoon dried oregano
- 1/2 teaspoon red pepper flakes (optional)
- Salt and freshly ground black pepper to taste
Instructions
- Prepare the chicken: Trim any excess fat from the chicken breasts, then season them generously with salt and freshly ground black pepper to enhance flavor.
- Sear the chicken: Heat olive oil in a large skillet over medium-high heat. Sear the chicken breasts on both sides until golden brown, approximately 2-3 minutes per side. This step is optional but adds depth and richness to the final dish.
- Transfer to slow cooker: Place the seared chicken breasts into your slow cooker, arranging them evenly.
- Sauté aromatics: In the same skillet, sauté the diced onion and minced garlic over medium heat until they become fragrant and translucent, about 3-4 minutes. This helps to develop the sauce’s flavor.
- Add aromatics to slow cooker: Transfer the sautéed onion and garlic mixture into the slow cooker on top of the chicken.
- Add tomatoes and seasonings: Pour the crushed tomatoes over the chicken and onions. Sprinkle in the dried oregano and red pepper flakes if using. Stir gently to combine the ingredients without displacing the chicken too much.
- Cook slowly: Cover the slow cooker and cook on low for 6-8 hours or on high for 3-4 hours. The chicken is done when it reaches an internal temperature of 165°F (74°C) and is tender.
- Add fresh basil: About 30 minutes before serving, stir in the freshly chopped basil leaves to infuse the dish with bright herbal notes.
Notes
- Searing the chicken before slow cooking is optional but highly recommended for enhanced flavor and better texture.
- You can adjust the red pepper flakes to control the spiciness or omit them for a milder dish.
- Serve this dish over pasta, rice, or with crusty bread to soak up the delicious tomato basil sauce.
- Leftovers keep well in the refrigerator for up to 3 days and can be reheated gently on the stovetop or microwave.

