Keto Creamy Cajun Chicken Pasta – Comforting, Spicy, and Low-Carb
This Keto Creamy Cajun Chicken Pasta brings restaurant-level comfort right to your kitchen—without kicking you out of ketosis. It’s rich, smoky, a little spicy, and full of satisfying textures. Think tender chicken, silky sauce, and a “pasta” base that keeps things light and low-carb.
You don’t need special equipment or fancy ingredients, just a pan, a skillet, and a good Cajun seasoning. It’s weeknight-friendly, crowd-pleasing, and easy to customize to your spice level.
Ingredients
Method
- Prep the “pasta” base: If using zucchini, spiralize and lay the zoodles on paper towels. Lightly salt and let sit for 10–15 minutes to draw out moisture, then pat dry. If using shirataki, rinse very well and dry-sauté in a skillet for 2–3 minutes to remove excess moisture and any odor.
- Season the chicken: Pat the chicken dry. Toss with 1 tablespoon of Cajun seasoning, a pinch of salt, and pepper. This helps the spices stick and creates a nice sear.
- Sear the chicken: Heat the oil in a large skillet over medium-high. Add the chicken in a single layer and cook 4–6 minutes, stirring once or twice, until browned and cooked through. Remove to a plate and keep warm.
- Sauté the veggies: Lower heat to medium. Add butter to the skillet, then onion and bell peppers. Cook 4–5 minutes until softened and slightly charred at the edges. Stir in the garlic and cook 30 seconds until fragrant.
- Build the sauce base: Stir in tomato paste and remaining Cajun seasoning (start with 1/2 tablespoon; add more later if you like). Cook 1 minute to caramelize the paste.
- Deglaze and simmer: Pour in chicken broth, scraping up browned bits. Simmer 2 minutes to reduce slightly.
- Make it creamy: Add heavy cream and cream cheese. Whisk or stir until smooth and gently bubbling, about 2–3 minutes. If you want a thicker sauce, simmer another minute.
- Finish the sauce: Stir in Parmesan until melted and silky. Add a squeeze of lemon juice if you like brightness. Taste and adjust with salt, pepper, or more Cajun seasoning.
- Combine with chicken: Return the chicken and any juices to the pan. Toss to coat and warm through.
- Add the “pasta”: Gently fold in zoodles or shirataki. Cook 1–2 minutes to heat through without overcooking the zucchini. You want it tender-crisp, not soggy.
- Garnish and serve: Sprinkle with parsley or green onions and red pepper flakes if desired. Serve hot.
What Makes This Recipe So Good
- Big flavor, low carbs: Cajun seasoning, garlic, and a touch of tomato paste make a bold, creamy sauce without added sugars.
- Quick to make: Most of the work happens in one skillet and it’s ready in about 30 minutes.
- Protein-packed: Chicken thighs or breasts provide staying power and help keep cravings down.
- Comforting but light: Using zucchini noodles or shirataki noodles makes it feel like pasta night without the carb crash.
- Flexible: Adjust the spice, swap proteins, or add low-carb veggies to make it your own.
Shopping List
- Chicken: 1.5 pounds boneless, skinless chicken thighs or breasts, cut into bite-sized pieces
- Butter and oil: 2 tablespoons butter, 1 tablespoon olive or avocado oil
- Cajun seasoning: 1.5 to 2 tablespoons (look for no added sugar)
- Garlic: 3–4 cloves, minced
- Onion: 1 small yellow onion, finely chopped
- Bell peppers: 1 red and 1 green, thinly sliced
- Tomato paste: 1 tablespoon (optional but recommended)
- Chicken broth: 3/4 cup, low-sodium
- Heavy cream: 3/4 cup
- Cream cheese: 2 ounces, softened
- Parmesan: 1/2 cup finely grated
- Lemon: 1/2 lemon for juice (optional)
- Fresh herbs: Chopped parsley or green onions for garnish
- Low-carb “pasta”: 4 medium zucchini (for zoodles) or 2 packs shirataki noodles, drained and rinsed
- Salt and pepper: To taste
- Red pepper flakes: Optional, for extra heat
Step-by-Step Instructions
- Prep the “pasta” base: If using zucchini, spiralize and lay the zoodles on paper towels. Lightly salt and let sit for 10–15 minutes to draw out moisture, then pat dry.
If using shirataki, rinse very well and dry-sauté in a skillet for 2–3 minutes to remove excess moisture and any odor.
- Season the chicken: Pat the chicken dry. Toss with 1 tablespoon of Cajun seasoning, a pinch of salt, and pepper. This helps the spices stick and creates a nice sear.
- Sear the chicken: Heat the oil in a large skillet over medium-high.
Add the chicken in a single layer and cook 4–6 minutes, stirring once or twice, until browned and cooked through. Remove to a plate and keep warm.
- Sauté the veggies: Lower heat to medium. Add butter to the skillet, then onion and bell peppers.
Cook 4–5 minutes until softened and slightly charred at the edges. Stir in the garlic and cook 30 seconds until fragrant.
- Build the sauce base: Stir in tomato paste and remaining Cajun seasoning (start with 1/2 tablespoon; add more later if you like). Cook 1 minute to caramelize the paste.
- Deglaze and simmer: Pour in chicken broth, scraping up browned bits.
Simmer 2 minutes to reduce slightly.
- Make it creamy: Add heavy cream and cream cheese. Whisk or stir until smooth and gently bubbling, about 2–3 minutes. If you want a thicker sauce, simmer another minute.
- Finish the sauce: Stir in Parmesan until melted and silky.
Add a squeeze of lemon juice if you like brightness. Taste and adjust with salt, pepper, or more Cajun seasoning.
- Combine with chicken: Return the chicken and any juices to the pan. Toss to coat and warm through.
- Add the “pasta”: Gently fold in zoodles or shirataki.
Cook 1–2 minutes to heat through without overcooking the zucchini. You want it tender-crisp, not soggy.
- Garnish and serve: Sprinkle with parsley or green onions and red pepper flakes if desired. Serve hot.
Storage Instructions
- Fridge: Store leftovers in an airtight container for up to 3 days.
Zoodles will soften over time, but the flavors deepen.
- Freezer: The creamy sauce and zucchini don’t freeze well. If you want to freeze, store the chicken and sauce separately and add fresh zoodles when reheating.
- Reheat: Warm gently on the stovetop over low heat, adding a splash of broth or cream to loosen the sauce. Avoid boiling to prevent curdling.
Why This is Good for You
- Low-carb and high-fat balance: The sauce provides satisfying fats that align with keto, while keeping net carbs low.
- Quality protein: Chicken helps maintain muscle and keeps you full longer.
- Nutrient-dense veggies: Bell peppers and zucchini add vitamin C, potassium, and fiber without heavy carbs.
- Customizable sodium and spice: Making it at home lets you control salt, add herbs, and choose clean, no-sugar seasonings.
Pitfalls to Watch Out For
- Hidden sugars: Some Cajun blends and tomato pastes add sugar.
Check labels or make your own seasoning.
- Watery sauce: Skip salting zoodles or rushing the simmer and the sauce can thin out. Pat zucchini dry and let the sauce reduce before adding “pasta.”
- Overcooked zucchini: Zoodles only need a minute or two. Overcooking turns them mushy and watery.
- Curdled cream: Boiling dairy can split the sauce.
Keep heat at a gentle simmer once cream is added.
- Too salty: Cajun blends vary in saltiness. Taste before adding more salt, especially if your broth has sodium.
Variations You Can Try
- Swap the protein: Use shrimp, sausage, or a combo of both for a Cajun-inspired twist. Adjust cook times accordingly.
- Dairy-free option: Use full-fat coconut milk and a dairy-free cream cheese alternative.
Skip Parmesan or use a dairy-free Parmesan-style topping.
- Extra veggies: Add mushrooms, spinach, or asparagus tips for more texture and nutrients.
- Different “pasta” base: Try hearts of palm noodles or spaghetti squash if you prefer a firmer bite.
- Smoky boost: Add a pinch of smoked paprika or a few drops of liquid smoke for deeper flavor.
- Milder version: Cut the Cajun seasoning in half and omit red pepper flakes. You can always add heat at the table.
FAQ
Is this recipe truly keto?
Yes. The sauce is made with heavy cream, cream cheese, and Parmesan, and the “pasta” is zucchini or shirataki, which are low in net carbs.
Always check your Cajun seasoning and tomato paste for added sugar.
Can I use regular pasta?
You can, but it won’t be keto. If you’re cooking for mixed eaters, make the sauce and chicken as directed, then serve over both zoodles and regular pasta so everyone’s happy.
How spicy is it?
That depends on your Cajun blend. Many are medium-hot.
Start with less and add more to taste. Red pepper flakes add extra heat if you want it spicier.
What’s the best way to keep zoodles from getting soggy?
Salt them lightly, let them sit to release moisture, then pat dry. Add them to the sauce at the very end and cook just until warm and tender-crisp.
Can I make it ahead?
You can cook the chicken and sauce up to 2 days ahead and store them together.
Reheat gently and add fresh zoodles right before serving to keep the texture right.
What can I substitute for heavy cream?
Full-fat coconut milk works, but the flavor will be slightly different. To keep it extra creamy, still include a bit of cream cheese or a dairy-free alternative.
How do I make my own Cajun seasoning?
Mix paprika, garlic powder, onion powder, dried oregano, dried thyme, black pepper, cayenne, and salt. Adjust cayenne for heat and skip sugar entirely.
Can I use rotisserie chicken?
Yes.
Shred it and add it during the sauce step to warm through. You’ll miss the Cajun sear on the chicken, so season the sauce a bit more to compensate.
In Conclusion
Keto Creamy Cajun Chicken Pasta gives you everything you crave from a cozy pasta night—richness, spice, and comfort—without the carbs. It’s quick enough for weeknights and bold enough for guests.
Keep an eye on the zoodles, taste as you go, and you’ll have a silky, satisfying dish every time. Serve it hot, garnish generously, and enjoy the kind of meal that makes keto feel anything but limiting.
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