Keto Cajun Chicken Spaghetti Squash Skillet – A Spicy, Low-Carb Weeknight Favorite
This skillet checks every box on a busy weeknight: bold flavor, simple steps, and a satisfying, low-carb payoff. Cajun-spiced chicken gets cozy with tender strands of spaghetti squash, all pulled together with a creamy, garlicky sauce. It’s filling without feeling heavy, and it’s easy to customize with the veggies you have on hand.
If you want a meal that tastes like comfort food but still fits your goals, this one’s a keeper.
Keto Cajun Chicken Spaghetti Squash Skillet - A Spicy, Low-Carb Weeknight Favorite
Ingredients
Method
- Roast the squash: Preheat the oven to 400°F (200°C). Halve the spaghetti squash lengthwise, scoop out seeds, and brush cut sides with 1 tablespoon oil. Season with salt and pepper. Place cut-side down on a parchment-lined sheet and roast 35–45 minutes, until the flesh shreds easily with a fork.
- Season the chicken: Pat chicken dry and cut into bite-size strips. Toss with Cajun seasoning, smoked paprika (if using), a pinch of salt, and black pepper.
- Sauté the aromatics: Heat a large skillet over medium-high. Add remaining oil and 1 tablespoon butter. Sauté onion and bell pepper with a pinch of salt for 4–5 minutes, until softened and lightly browned. Stir in garlic for 30 seconds, until fragrant. Transfer veggies to a plate.
- Cook the chicken: In the same skillet, add the remaining 1 tablespoon butter. Add the seasoned chicken in an even layer. Cook 5–7 minutes, turning as needed, until browned and cooked through. If the pan browns too fast, reduce heat slightly.
- Build the sauce: Return the onions and peppers to the skillet. Pour in chicken broth, scraping up browned bits. Stir in heavy cream and bring to a gentle simmer for 2–3 minutes, until slightly thickened.
- Add the squash: When the spaghetti squash is cool enough to handle, use a fork to shred it into strands. Add strands to the skillet. Toss to coat in the creamy Cajun sauce.
- Finish and balance: Stir in Parmesan until melted and creamy. Squeeze in lemon juice to brighten. Taste and adjust salt, pepper, and Cajun seasoning. If you want more heat, add a pinch of cayenne.
- Garnish and serve: Sprinkle with chopped parsley or green onions. Serve hot, with extra Parmesan and lemon wedges on the side.
What Makes This Recipe So Good
- Big flavor, simple method: A quick Cajun seasoning blend delivers smoky heat and depth without a long ingredient list.
- Low-carb and gluten-free: Spaghetti squash stands in for pasta, giving you the same twirl-worthy texture without the carbs.
- One-pan convenience: After roasting the squash, everything cooks in a single skillet for easy cleanup.
- Meal-prep friendly: The flavors get even better the next day, and the dish reheats well for lunches.
- Customizable heat: You control the spice level. Make it mild for the family or bring the fire.
Shopping List
- 1 medium spaghetti squash (about 2.5–3 pounds)
- 1.25–1.5 pounds boneless, skinless chicken breasts or thighs
- 2 tablespoons Cajun seasoning (store-bought or homemade), plus more to taste
- 1 teaspoon smoked paprika (optional, for extra depth)
- 1 medium yellow onion, thinly sliced
- 1 red bell pepper, thinly sliced
- 3–4 cloves garlic, minced
- 2 tablespoons olive oil or avocado oil
- 2 tablespoons butter (or ghee)
- 1/2 cup heavy cream (or full-fat coconut milk for dairy-free)
- 1/3 cup chicken broth (low-sodium)
- 1/2 cup grated Parmesan (or nutritional yeast for dairy-free)
- 1/4 cup chopped fresh parsley or green onions
- Juice of 1/2 lemon
- Kosher salt and black pepper
How to Make It
- Roast the squash: Preheat the oven to 400°F (200°C). Halve the spaghetti squash lengthwise, scoop out seeds, and brush cut sides with 1 tablespoon oil.
Season with salt and pepper. Place cut-side down on a parchment-lined sheet and roast 35–45 minutes, until the flesh shreds easily with a fork.
- Season the chicken: Pat chicken dry and cut into bite-size strips. Toss with Cajun seasoning, smoked paprika (if using), a pinch of salt, and black pepper.
- Sauté the aromatics: Heat a large skillet over medium-high.
Add remaining oil and 1 tablespoon butter. Sauté onion and bell pepper with a pinch of salt for 4–5 minutes, until softened and lightly browned. Stir in garlic for 30 seconds, until fragrant.
Transfer veggies to a plate.
- Cook the chicken: In the same skillet, add the remaining 1 tablespoon butter. Add the seasoned chicken in an even layer. Cook 5–7 minutes, turning as needed, until browned and cooked through.
If the pan browns too fast, reduce heat slightly.
- Build the sauce: Return the onions and peppers to the skillet. Pour in chicken broth, scraping up browned bits. Stir in heavy cream and bring to a gentle simmer for 2–3 minutes, until slightly thickened.
- Add the squash: When the spaghetti squash is cool enough to handle, use a fork to shred it into strands.
Add strands to the skillet. Toss to coat in the creamy Cajun sauce.
- Finish and balance: Stir in Parmesan until melted and creamy. Squeeze in lemon juice to brighten.
Taste and adjust salt, pepper, and Cajun seasoning. If you want more heat, add a pinch of cayenne.
- Garnish and serve: Sprinkle with chopped parsley or green onions. Serve hot, with extra Parmesan and lemon wedges on the side.
Storage Instructions
- Refrigerator: Store in an airtight container for 3–4 days.
Let it cool before sealing to prevent condensation.
- Freezer: Freeze in meal-size portions for up to 2 months. Thaw overnight in the fridge before reheating.
- Reheat: Warm gently on the stovetop over medium-low, adding a splash of broth or cream to loosen the sauce. Microwave in short bursts, stirring between intervals.
Health Benefits
- Low in carbs, high in satisfaction: Spaghetti squash delivers noodle-like texture with a fraction of the carbs, helping support ketosis while keeping you full.
- Protein-packed: Chicken provides complete protein for muscle repair and steady energy.
- Healthy fats: Olive oil, butter, and cream add satiating fats that help you stay on track with keto goals.
- Micronutrient boost: Bell peppers and onions offer vitamin C, antioxidants, and fiber.
Spaghetti squash adds potassium, vitamin A precursors, and more fiber.
- Customizable for dietary needs: Swap dairy with full-fat coconut milk and nutritional yeast for a dairy-free version that still feels creamy and rich.
Pitfalls to Watch Out For
- Overcooking the squash: Too long in the oven makes it mushy. Check early and stop when it shreds but still has a slight bite.
- Watery sauce: If your squash is very moist, simmer the sauce a minute longer before adding it, and don’t be afraid to add a little extra Parmesan to tighten it up.
- Too salty: Many Cajun blends include salt. Taste before adding more salt to the chicken or sauce.
- Heat overload: Cajun seasoning varies.
Start with less, then add more after tasting to avoid blowing out the dish.
- Overcrowding the pan: Cook chicken in a single layer for good browning. Crowding steams it and dulls flavor.
Variations You Can Try
- Sausage twist: Swap half the chicken for sliced and browned andouille or smoked sausage for extra Cajun flavor.
- Blackened shrimp: Replace chicken with shrimp. Cook shrimp 1–2 minutes per side, remove, make the sauce, then return shrimp at the end.
- Veggie boost: Add chopped zucchini, spinach, or mushrooms with the peppers and onions.
Sauté until moisture cooks off for the best texture.
- Ultra-creamy: Stir in a few ounces of cream cheese with the cream for a thicker, silkier sauce.
- Dairy-free: Use coconut milk and nutritional yeast instead of cream and Parmesan. A splash of almond milk can help lighten if needed.
- Extra smoky: Add a dash of liquid smoke or double the smoked paprika for a backyard-grill vibe.
FAQ
Can I cook the spaghetti squash in the microwave?
Yes. Pierce the squash several times with a knife, microwave 5 minutes to soften, halve it, scoop the seeds, then microwave cut-side down in a dish with a little water for 10–12 more minutes, until it shreds easily.
Is this recipe spicy?
It’s as spicy as your Cajun seasoning.
For mild heat, use less seasoning and skip cayenne. For more kick, add cayenne or a few dashes of hot sauce at the end.
Can I make it ahead?
Absolutely. Roast the squash and cook the chicken and veggies up to 2 days ahead.
Reheat in a skillet with cream and broth, then add Parmesan and lemon right before serving.
What can I use instead of heavy cream?
Full-fat coconut milk works well and keeps it keto. It adds a subtle coconut note that pairs nicely with Cajun spices.
How do I keep leftovers from getting watery?
Let the squash steam off excess moisture after roasting by resting it cut-side up for a few minutes. When reheating, simmer briefly to reduce, and add a bit more Parmesan to thicken if needed.
Can I use rotisserie chicken?
Yes.
Toss shredded rotisserie chicken with Cajun seasoning, then warm it in the skillet with the onions and peppers before adding liquids. It’s a great shortcut.
Wrapping Up
Keto Cajun Chicken Spaghetti Squash Skillet brings big, peppery flavor to the table with very little fuss. You get tender chicken, a lush sauce, and twirlable squash that stands in for pasta without compromise.
Keep it mild or crank up the heat, swap in your favorite proteins, and make it your own. This is the kind of weeknight meal that feels special but fits your routine—and your goals.
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