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–+ servings

Amazing Cheesy Chicken Spaghetti Squash Casserole

Rose
A low-carb, comforting casserole made with spaghetti squash, tender chicken, roasted red peppers, and a rich blend of cheeses and pesto. This healthy yet indulgent dish is perfect for weeknight dinners or family meals.
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Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Course Main Course
Cuisine American
Servings 4 servings
Calories 310 kcal

Equipment

  • baking sheet
  • large mixing bowl
  • knife
  • cutting board
  • oven

Ingredients
  

  • 1 medium spaghetti squash, halved and seeded
  • 2 cups cooked chicken, diced or shredded
  • 1 cup roasted red peppers, chopped
  • 0.5 cup pesto
  • 1 cup shredded mozzarella cheese
  • 0.5 cup grated Parmesan cheese
  • 2 tbsp fresh basil, chopped
  • 2 tbsp fresh parsley, chopped
  • salt and pepper to taste
  • 1 tbsp olive oil
  • 2 tbsp toasted pine nuts (optional)
  • fresh basil leaves for garnish (optional)

Instructions
 

  • Preheat oven to 400°F. Drizzle spaghetti squash with olive oil, season with salt and pepper, and roast cut-side down for 35–40 minutes. Scrape into strands once cooled.
  • Dice or shred cooked chicken and toss with 1/4 cup pesto, salt, and pepper.
  • In a large bowl, combine squash strands, chicken, roasted red peppers, Parmesan cheese, herbs, and remaining pesto. Mix gently.
  • Preheat broiler. Transfer mixture into squash shells or a greased baking dish and top with mozzarella cheese.
  • Broil for 3–5 minutes until cheese is melted and golden. Remove and let cool slightly.
  • Garnish with toasted pine nuts and fresh basil, then serve warm.

Notes

Use rotisserie chicken for convenience and high-quality pesto for best flavor. To reduce moisture, drain spaghetti squash before mixing. For dairy-free, use vegan cheese alternatives. Assemble ahead and broil just before serving.

Nutrition

Calories: 310kcalCarbohydrates: 12gProtein: 28gFat: 18gSaturated Fat: 7gPolyunsaturated Fat: 2gMonounsaturated Fat: 7gCholesterol: 75mgSodium: 520mgPotassium: 450mgFiber: 3gSugar: 4gVitamin A: 2500IUVitamin C: 35mgCalcium: 250mgIron: 2mg
Keyword cheesy squash bake, healthy comfort food, low carb chicken casserole, spaghetti squash casserole
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