This crockpot method transforms simple ingredients into a rich, flavorful chicken spaghetti sauce with minimal effort. Low and slow cooking allows the flavors to meld beautifully, creating a sauce that’s deep and satisfying.
You’ll love how tender the chicken becomes, absorbing all the herbs and tomatoes. Just set it in the morning and come home to a meal that’s ready to serve over your favorite pasta.
Ingredients for Chicken Spaghetti Sauce Recipe Crockpot
Simple ingredients transform into rich, slow-cooked sauce with minimal effort for pasta night.
| Ingredient | Amount | Notes |
|---|---|---|
| Boneless Skinless Chicken Breasts 🍗 | 1 ½ lb | Trimmed of excess fat |
| San Marzano Canned Tomatoes 🍅 | 28 oz | Crushed, with juices |
| Tomato Paste 🫒 | 3 tbsp | For depth of flavor |
| Yellow Onion 🧅 | 1 whole | Finely diced |
| Garlic Cloves 🧄 | 5 cloves | Minced for maximum flavor |
| Dried Basil 🌿 | 2 tsp | Or 2 tbsp fresh chopped |
| Dried Oregano 🍃 | 2 tsp | Mediterranean variety preferred |
| Red Pepper Flakes 🌶️ | ½ tsp | Adjust to taste |
| Dried Thyme 🌿 | 1 tsp | Rubbed between fingers |
| Chicken Broth 🥣 | 1 cup | Low-sodium preferred |
| Extra-Virgin Olive Oil 🫒 | 2 tbsp | For sautéing aromatics |
| Kosher Salt 🧂 | 1 ½ tsp | Diamond Crystal brand recommended |
| Freshly Ground Black Pepper 🌶️ | 1 tsp | Coarse grind preferred |
| Dry White Wine 🍷 | ½ cup | Optional for deglazing |
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The tomatoes are key here—San Marzano cans (look for the DOP label) have that perfect sweet-tart balance. Costco carries them in bulk, or grab a few cans at Whole Foods. For the chicken, I prefer breasts for their lean texture, but thighs work too (they’ll shred more easily). The broth? Better Than Bouillon paste mixed with water tastes just as good as boxed.
No white wine? Extra chicken broth with a splash of lemon juice works in a pinch. Fresh herbs? Use triple the amount of dried (so 2 tbsp fresh basil instead of 2 tsp dried). If you’re short on time, pre-minced garlic from a jar is fine—just saute it a minute less. The tomato paste can be swapped for sun-dried tomato paste for a deeper, slightly sweeter flavor.
This sauce tastes even better the next day. Store in an airtight container in the fridge for up to 5 days, or freeze for 3 months. I like to portion it into meal-sized containers—perfect for quick weeknight dinners (just thaw and reheat).
Why You’ll Love This Recipe
- Set and Forget: Honestly, I just dump everything in the crockpot in the morning and let the San Marzano tomatoes and chicken do their thing.
- Rich Simmered Flavor: The garlic and tomato paste melt together into this deep, savory sauce that clings to every noodle.
- Feeds the Week: I make a double batch—it freezes beautifully for those nights I can’t even.
- Pantry Hero: Between us, I always have these canned tomatoes and chicken breasts on hand, so dinner’s never far away.
Step-by-Step Instructions for Chicken Spaghetti Sauce Crockpot
This hands-off method delivers deeply flavored sauce with minimal effort on your part.
Step 1: Sear the Chicken and Sauté Aromatics
Heat the 2 tbsp extra-virgin olive oil in a large skillet over medium-high heat. Season the 1.5 lb boneless skinless chicken breasts with 1.5 tsp kosher salt and 1 tsp freshly ground black pepper, then sear for 3-4 minutes per side until golden brown.
You’re not cooking it through—just developing color and flavor. Transfer the chicken to the slow cooker. In the same skillet, add the finely diced yellow onion and cook for 3-4 minutes until soft and translucent. Add the 5 cloves minced garlic cloves and cook for 30 seconds until fragrant.
Deglaze with the 0.5 cup dry white wine, scraping up any browned bits. This adds incredible depth to your sauce. Pour this mixture into the slow cooker with the chicken.
Step 2: Build the Sauce Base in the Crockpot
Add the 28 oz San Marzano canned tomatoes (with juices), 3 tbsp tomato paste, 2 tsp dried basil, 2 tsp dried oregano, 0.5 tsp red pepper flakes, and 1 tsp dried thyme to the slow cooker.
Pour in the 1 cup chicken broth and stir everything together. I always rub the dried herbs between my fingers as I add them—this releases their essential oils and maximizes flavor. The liquid should just cover the chicken.
This is where the magic starts. The slow cooker will transform these simple ingredients into a rich, complex sauce over time.
Step 3: Slow Cook to Perfection
Cover and cook on low for 6-7 hours or on high for 3-4 hours. The chicken is done when it shreds easily with a fork. You’ll know it’s ready when the sauce has deepened in color and the aroma fills your kitchen.
About 30 minutes before serving, remove the chicken and shred it using two forks. Return the shredded chicken to the sauce and let it finish cooking. This allows the flavors to meld completely.
The sauce should be thick enough to coat the back of a spoon, with the chicken absorbing all that rich tomato flavor.
Step 4: Adjust and Serve
Taste and adjust seasoning if needed. The sauce should have a balance of acidity from the tomatoes, warmth from the spices, and richness from the chicken. If it’s too thick, stir in a splash of water or broth.
Let it rest for 10 minutes before serving to allow the flavors to settle. The sauce will continue to thicken slightly as it cools. Serve this over pasta with a sprinkle of Parmesan for the ultimate comfort meal.
Pro Tips For Making Chicken Spaghetti Sauce Recipe Crockpot
- Sear the Chicken First: I learned this the hard way—browning the chicken breasts for 2-3 minutes per side in a hot pan before adding to the crockpot adds depth the slow cooker alone can’t.
- Crush the San Marzano: Sounds weird, but it works: hand-crush the canned tomatoes before adding them to break up the whole ones and release more juice into the sauce.
- Skip the Pre-Cooked Onion: Resist the urge to sauté the onion first—just dice it fine and toss it in raw with the garlic; 6-8 hours on low will soften it perfectly without extra effort.
- Add Paste Last: Stir in the tomato paste during the last 30 minutes of cooking—this prevents it from scorching and keeps the sauce from getting bitter.
Health Benefits of chicken spaghetti sauce recipe crockpot
Protein Powerhouse
The 1.5 lb boneless skinless chicken breasts in this dish provide about 90 grams of protein, supporting muscle maintenance and repair. Lean chicken is an excellent source of all nine essential amino acids your body can’t produce on its own. 💪
Lycopene Boost
The 28 oz San Marzano canned tomatoes deliver a hefty dose of lycopene, a powerful antioxidant linked to reduced risk of heart disease. Cooking tomatoes actually increases lycopene availability, making this dish even more nutritious than raw tomato dishes.
Heart-Healthy Fats
You’ll get beneficial monounsaturated fats from the 2 tbsp extra-virgin olive oil, which support cardiovascular health. These healthy fats also help your body absorb the fat-soluble vitamins in the tomatoes and herbs.
Immunity Support
The 5 cloves minced garlic and yellow onion are packed with immune-boosting compounds. Garlic contains allicin, known for its antiviral and antibacterial properties, while onions provide quercetin, a natural antihistamine. 💛
Low-Calorie Comfort
Despite its rich flavor, this sauce is relatively low in calories—about 250-300 calories per serving without pasta. The slow cooking process allows you to develop deep flavors without adding excess fat or sugar.
Fiber-Rich Benefits
The tomatoes and herbs contribute dietary fiber, with about 4-5 grams per serving. This supports digestive health and helps you feel satisfied longer. The fiber also helps regulate blood sugar levels.
Nutrition Facts
Frequently Asked Questions
Can I use chicken thighs instead of breasts?
Yes! Chicken thighs work great and often stay juicier. Use 1.5 lb boneless skinless thighs and follow the same cooking times. They’ll shred more easily than breasts.
How do I make the sauce thicker?
Remove the lid and cook on high for 30-60 minutes after shredding the chicken. Alternatively, mix 1 tbsp cornstarch with 2 tbsp water and stir in during the last 30 minutes.
Can I make this ahead and freeze it?
Cool completely, then store in airtight containers for up to 3 months. Thaw overnight in the fridge before reheating on the stove.
What if my sauce tastes too acidic?
Balance it with 1 tsp sugar or a pinch of baking soda. Stir in 2 tbsp heavy cream for richness if desired. Taste and adjust gradually.
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