Keto Chicken Alfredo Stuffed Peppers – Creamy, Comforting, and Low-Carb
Creamy Alfredo sauce meets tender chicken and sweet bell peppers in this cozy, low-carb dinner. It’s the kind of weeknight meal that feels special but doesn’t take all night. If you love rich flavors without the heavy carb count, this one hits the spot.
The filling is cheesy, comforting, and satisfying, while the peppers add a fresh pop. Make it once, and it’ll slide right into your dinner rotation.
Ingredients
Method
- Heat the oven: Preheat to 400°F (200°C). Line a baking sheet or a 9x13-inch baking dish with parchment for easy cleanup.
- Prep the peppers: Slice each pepper in half lengthwise and remove seeds and membranes. Brush the insides with olive oil and season with salt and pepper. Place cut-side up on the baking sheet.
- Par-bake the peppers: Bake for 10–12 minutes to soften slightly. This prevents crunchy peppers later.
- Make the Alfredo base: In a skillet over medium heat, melt butter. Add garlic and cook 30–60 seconds until fragrant. Pour in heavy cream and bring to a gentle simmer.
- Thicken the sauce: Stir in Parmesan and cream cheese. Whisk until smooth and slightly thick, 3–4 minutes. Season with onion powder, Italian seasoning, red pepper flakes (if using), salt, and black pepper.
- Add chicken and mozzarella: Fold in the cooked chicken and half of the mozzarella. The mixture should be thick and creamy. If too thick, add a splash of cream; if too thin, simmer 1–2 more minutes.
- Fill the peppers: Spoon the chicken Alfredo mixture into the par-baked pepper halves. Don’t overfill; divide evenly.
- Top and bake: Sprinkle with remaining mozzarella and a bit of extra Parmesan. Bake 12–15 minutes until the cheese melts and starts to brown at the edges.
- Finish and serve: Let rest 5 minutes. Garnish with chopped parsley. Taste and add a final pinch of salt and pepper if needed.
Why This Recipe Works
This dish balances rich and fresh flavors in a way that feels complete. The peppers add natural sweetness and structure, while the chicken and Alfredo sauce bring creamy, savory protein.
Using a keto-friendly sauce keeps the carbs low but the flavor big. Everything bakes together so the peppers turn tender, but not mushy, and the top gets lightly golden. It’s simple to prep, reheats well, and fits both family dinners and meal prep.
Ingredients
- 4 large bell peppers (any color; red and yellow are sweeter)
- 2 cups cooked chicken, shredded or diced (rotisserie works great)
- 1 1/4 cups heavy cream
- 3 tablespoons unsalted butter
- 3 cloves garlic, minced
- 3/4 cup freshly grated Parmesan cheese (plus extra for topping)
- 1/2 cup shredded mozzarella (for stretch and melt)
- 2 tablespoons cream cheese (helps thicken and adds tang)
- 1 tablespoon olive oil (for prepping the peppers)
- 1/2 teaspoon onion powder
- 1/2 teaspoon Italian seasoning (optional)
- 1/4 teaspoon crushed red pepper flakes (optional, for gentle heat)
- Kosher salt and black pepper, to taste
- Fresh parsley, chopped, for garnish
How to Make It
- Heat the oven: Preheat to 400°F (200°C).
Line a baking sheet or a 9×13-inch baking dish with parchment for easy cleanup.
- Prep the peppers: Slice each pepper in half lengthwise and remove seeds and membranes. Brush the insides with olive oil and season with salt and pepper. Place cut-side up on the baking sheet.
- Par-bake the peppers: Bake for 10–12 minutes to soften slightly.
This prevents crunchy peppers later.
- Make the Alfredo base: In a skillet over medium heat, melt butter. Add garlic and cook 30–60 seconds until fragrant. Pour in heavy cream and bring to a gentle simmer.
- Thicken the sauce: Stir in Parmesan and cream cheese.
Whisk until smooth and slightly thick, 3–4 minutes. Season with onion powder, Italian seasoning, red pepper flakes (if using), salt, and black pepper.
- Add chicken and mozzarella: Fold in the cooked chicken and half of the mozzarella. The mixture should be thick and creamy.
If too thick, add a splash of cream; if too thin, simmer 1–2 more minutes.
- Fill the peppers: Spoon the chicken Alfredo mixture into the par-baked pepper halves. Don’t overfill; divide evenly.
- Top and bake: Sprinkle with remaining mozzarella and a bit of extra Parmesan. Bake 12–15 minutes until the cheese melts and starts to brown at the edges.
- Finish and serve: Let rest 5 minutes.
Garnish with chopped parsley. Taste and add a final pinch of salt and pepper if needed.
Keeping It Fresh
- Storage: Cool completely, then refrigerate in an airtight container for up to 4 days.
- Reheating: Warm in a 325°F (165°C) oven for 12–15 minutes, or microwave in 45-second bursts until hot. Add a spoonful of cream if the filling looks dry.
- Freezing: Freeze baked and cooled stuffed peppers individually, tightly wrapped, for up to 2 months.
Thaw overnight in the fridge before reheating.
- Meal prep tip: Keep the filling and par-baked peppers separate for up to 3 days, then fill and bake when you’re ready.
Why This is Good for You
This recipe keeps carbs low while delivering satisfying protein and fat. Chicken brings lean protein that supports muscle and satiety. Heavy cream and cheese provide healthy fats for energy on a keto plan. Bell peppers add vitamin C, fiber, and antioxidants without many carbs. The balance helps you feel full and keeps blood sugar steady, which is key for a keto lifestyle.
Pitfalls to Watch Out For
- Watery peppers: Skip this by par-baking the peppers first and avoiding excess liquid in the filling.
- Grainy sauce: Use freshly grated Parmesan and keep the heat moderate. Pre-shredded cheese can clump or separate.
- Overcooked peppers: Don’t bake too long after filling.
You want tender, not collapsed.
- Too mild or too salty: Taste the sauce before filling. Parmesan is salty, so season gradually.
- Hidden carbs: Watch labels on store-bought chicken or pre-shredded cheese; some add starches or sugars.
Recipe Variations
- Broccoli Boost: Stir in 1 cup steamed, chopped broccoli for classic chicken-and-broccoli Alfredo vibes.
- Bacon Ranch: Add 3 slices cooked, crumbled bacon and 1 teaspoon ranch seasoning to the filling.
- Spinach and Artichoke: Fold in 1 cup chopped spinach and 1/2 cup chopped artichoke hearts (well-drained).
- Mushroom Alfredo: Sauté sliced mushrooms in butter until browned, then add to the sauce with the chicken.
- Spicy Cajun: Swap Italian seasoning for 1 teaspoon Cajun seasoning and add extra red pepper flakes.
- Dairy-Light Option: Use half heavy cream and half unsweetened almond milk, and add a pinch of xanthan gum to help thicken.
- Cheese Swap: Replace mozzarella with provolone or fontina for a different melt and flavor.
FAQ
Can I use store-bought Alfredo sauce?
Yes, but check the label. Many jarred sauces contain starch or sugar.
Choose a low-carb brand with simple ingredients, or make it from scratch for better flavor and control.
What kind of chicken works best?
Leftover roasted or rotisserie chicken is perfect. Thigh meat stays juicy, but breast meat works too. Just avoid overcooking when reheating in the sauce.
Do I have to par-bake the peppers?
It’s strongly recommended.
Par-baking softens them slightly so the final texture is tender, not crunchy, without extending the bake time too much.
How can I thicken the sauce without flour?
Use cream cheese and reduce the sauce gently. Freshly grated Parmesan also helps thicken. If needed, a tiny pinch of xanthan gum (about 1/8 teaspoon) can stabilize it.
Which peppers are best for stuffing?
Choose large, sturdy peppers with flat-ish bottoms so they sit upright.
Red and yellow are sweeter; green peppers are less sweet and slightly lower in carbs.
Can I make this recipe dairy-free and still keto?
It’s tricky but possible. Use a full-fat coconut cream base and a dairy-free Parmesan-style cheese. The flavor will change, but the dish can still be rich and satisfying.
How many carbs are in each serving?
Exact numbers vary by brand and pepper size.
As a ballpark, one stuffed pepper half usually lands around 6–9 net carbs. For accuracy, plug your exact ingredients into a nutrition calculator.
What should I serve with it?
Keep it simple and low-carb: a crisp side salad, roasted broccoli, sautéed zucchini, or garlic butter green beans. The dish is rich, so a fresh side balances it well.
Wrapping Up
Keto Chicken Alfredo Stuffed Peppers bring creamy comfort without the carb crash.
They’re easy to prep, family-friendly, and endlessly customizable. Whether you stick to the classic version or play with add-ins, you’ll get a satisfying, wholesome dinner that feels indulgent. Keep this one handy for busy nights, cozy weekends, and make-ahead lunches that you’ll actually look forward to eating.
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