Creamy Slow Cooker Cajun Chicken Pasta (Easy Weeknight Dinner)
If you’re looking for an easy dinner that feels a little extra without a lot of work, this slow cooker Cajun chicken pasta is always a good idea.
It’s creamy, a little spicy, and packed with bold Cajun flavor, all made right in the slow cooker. The chicken turns tender, the sauce comes together rich and smooth, and everything gets tossed with pasta for a cozy, satisfying meal.
This is one of those dinners that works just as well on a busy weeknight as it does when you want something comforting without standing over the stove. If you like creamy pasta with a little kick, this one’s going to be on repeat.
Recipe Snapshot
- Creamy Cajun Comfort Food: This slow cooker Cajun chicken pasta combines tender chicken, sweet bell peppers, fire-roasted tomatoes, and penne pasta in a rich, creamy Cajun parmesan sauce.
- Easy Weeknight Dinner: With only about 10 minutes of prep, the slow cooker handles most of the work while the flavors slowly build into a hearty family-style meal.
- Bold Flavor Without Extra Fuss: Cajun seasoning, parmesan, and fire-roasted tomatoes give this pasta a restaurant-style flavor while still using simple everyday ingredients.
- Best For: Busy weeknights, cozy comfort food dinners, meal prep leftovers, casual family gatherings, and pasta nights when you want something creamy with a little kick.
David’s Tip: Add the pasta closer to the end of cooking and stir it every 10 minutes if possible. Slow cookers trap heat differently, and this helps keep the penne perfectly tender instead of overly soft or mushy.
Why This Recipe Works
Ingredients You'll Need
- Boneless, skinless chicken breast (bite-size pieces): Cutting small means quick, even cooking and more surface area to soak up Cajun flavor. Chicken thighs work great if you want extra tenderness.
- Cajun seasoning: The flavor driver—smoky, garlicky, a little spicy. Sprinkle some on the chicken first so it seasons from the inside out, then add the rest to the pot. Choose mild or hot depending on your crowd.
- Red & yellow bell peppers (strips): Sweetness and color that balance the spice; slice a little thicker so they keep some bite after slow cooking.
- Red onion (sliced): Melts into the sauce and adds a subtle sweetness that plays well with Cajun spices.
- Garlic (minced): Blooms in the slow cooker and perfumes the whole pot; two cloves keep it friendly for everyone.
- Chicken broth (cans): Builds the base and provides the liquid the pasta needs later. Low-sodium keeps you in control; you can add more at the end if you want extra saucy bowls.
- Fire-roasted tomatoes (can): Adds gentle smokiness and acidity to brighten the richness—key for balance in creamy pasta.
- Heavy cream (divided): A portion cooks with the broth for early body, then a final splash at the end makes the sauce glossy and restaurant-silky.
- Penne pasta (12 oz, uncooked): Holds up beautifully in slow-cooked sauces and stays pleasantly al dente; rotini or ziti also work.
- Cornstarch + water (slurry): Quick thickener so the sauce clings to every bite—add with the pasta window so it activates as things finish.
- Parmesan (shredded): Melts in at the end for salty, savory depth and an extra creamy finish; freshly grated melts smoother.
David’s “Pro-Chef” Instructions
- The Base: Toss your seasoned chicken, peppers, onions, and garlic into the slow cooker. Pour in the broth, tomatoes, and the first half-cup of cream.
- The Slow Burn: Set it on high for about 3 hours. You want that chicken tender and the flavors fully married.
- The Pasta Window: About 30-40 minutes before you're ready to eat, stir in the uncooked penne and your cornstarch slurry.
- The “David” Tip: Set a timer for 25 minutes. Every slow cooker is a little different, and you want to start checking the pasta then. Once it’s nearly there, stir in the remaining cream and Parmesan.
Looking for more one-pot wins?
Since this is a staple in my Slow Cooker Recipes silo, you might also love my Slow Cooker Salisbury Steaks. It’s another “set it and forget it” meal that Stephen and I both swear by.
Recipe Variations You Can Do
A few easy tweaks can be made to this satisfying pasta meal. While I love this recipe as is, here are some of my recommendations:
Make it Vegetarian: You can easily use vegetable broth instead of chicken broth, and keep the chicken out and use a heartier style produce, such as mushrooms.
Creamy Cajun Spinach Alfredo: You can completely omit the tomatoes in the recipe. This will help balance out the acidity. Baby spinach can be added in at the last minute, since it doesn't long to cook. Use a bag of fresh baby spinach, which is approximately 7 cups of UNCOOKED baby spinach. Empty contents into slow cooker and cover with the lid for about 5 minutes. Then start stirring and folding baby spinach into pasta.
Storage, Make-Ahead, and Reheat
- FRIDGE: Once completely cooled, store leftover Cajun chicken pasta in an airtight container in the fridge for 3-4 days.
- FREEZER: This Cajun pasta dish can be stored in the freezer for up to 3 months and thawed overnight in the fridge before reheating.
- REHEAT: Reheat single portions in the microwave or on the stovetop for larger portions with a splash of broth or cream to loosen it.
More Easy Weeknight Pasta Recipes
- Instant Pot Cheesy Chicken And Pasta
- Instant Pot Feta Pasta (TikTok Pasta)
- Penne Pasta With Sausage
- Easy Pasta Carbonara
- Homemade Hamburger Helper
Slow Cooker Cajun Chicken Pasta
Ingredients
- 1 lb boneless skinless chicken breast cut into bite sized pieces
- 1 1/2 tbsp Cajun seasoning
- 1 red pepper cut into strips
- 1 yellow pepper cut into strips
- 1 red onion sliced
- 2 garlic cloves minced
- 2 cans of chicken broth
- 1 can fire roasted tomatoes
- 3/4 cup heavy cream
- 12 oz penne pasta
- 2 tsp cornstarch
- 1 tbsp water
- 3/4 cup shredded Parmesan cheese
- Salt and pepper to taste
- A sprinkle of parsley
Instructions
- 1. Add diced chicken breast to an 8 quart slow cooker, add 1/2 tbsp of cajun. Add all the peppers, onions and garlic on top and add the remaining Cajun.
2. Add in the chicken broth, tomatoes and 1/2 cup heavy cream. Cook on high for 3 hours or until the chicken is cooked.
3. About 30-40 minutes before done, add in the uncooked pasta and stir. Add the cornstarch and water mixture and stir again, put the lid back on and stir every 10 minutes until pasta is cooked.
4. Once done add in the 1/4 cup heavy cream, Parmesan cheese, salt and pepper. Stir and serve with topped parsley (optional)
Nutrition
Notes
David's Tips for Success
Spice level: Reduce Cajun seasoning to 1 tbsp for milder flavor.Pasta tip: For firmer texture, cook pasta separately and add before serving.
Extra creamy: Stir in 4 oz cream cheese at the end.
Meal prep: Stores well in the fridge for 3 days (add splash of broth when reheating).
Cooking Time: You can change the timing to cook on LOW heat for 4 -5 hours
Tried this recipe?
Let us know how it was!FAQ: Let’s Troubleshoot Your Dinner
“Can I use frozen chicken?”
You can, but I wouldn't. Frozen chicken releases a lot of extra water, which can thin out that beautiful Cajun sauce. If you must use it, add an extra hour to the cook time and maybe an extra teaspoon of cornstarch to the slurry.
“How do I keep the pasta from getting mushy?”
This is the big one. Do not—I repeat, DO NOT—add the pasta at the beginning. It only needs that final window of time. If you’re really worried, you can boil the pasta separately and toss it in at the very end, but then you’ve got another pot to wash, and who has time for that?
“What if I want it spicier?”
The recipe as written is “family-friendly” (Angela-approved!), but if you want to break a sweat, add an extra tablespoon of Cajun seasoning or a few dashes of your favorite hot sauce at the end.
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