Spaghetti Squash Chicken Casserole

Indulge in the perfect fusion of flavors with our Spaghetti Squash Chicken Casserole, a delightful dish that brings together the wholesome goodness of spaghetti squash, succulent chicken, and a medley of fresh vegetables. In this article, we’ll guide you through the step-by-step process of creating this mouthwatering casserole, ensuring a memorable culinary experience for you and your loved ones.



For the Squash and Chicken:

Ingredients Quantity
Spaghetti Squash 2 squash
Chicken Breast 1 lb
Olive Oil 1 tbsp
Kosher Salt ¾ tsp
Black Pepper ½ tsp

For the Casserole:

Ingredients Quantity
Neutral Oil 2 tbsp
Zucchini 1 small
Onion (diced) 1 medium
Bell Pepper (diced) 1
Kosher Salt ½ tsp
Grape or Cherry Tomatoes 1 pint (halved)
Garlic (minced) 4 cloves
Italian Seasoning 1 ½ tbsp
Red Pepper Flakes ¼ tsp
Black Pepper ½ tsp
Chicken Stock ¼ cup
Frozen Peas 1 cup
Shredded Mozzarella Cheese 1 ½ cups
Grated Parmesan Cheese ½ cup


For the Squash and Chicken

  1. Preheat the Oven: Set the oven to 375°F.
  2. Prepare the Squash: Cut, seed, and place the squash on a baking sheet with chicken breasts. Drizzle with olive oil and season with salt and black pepper.
  3. Roast the Chicken: Cook chicken until it reaches 160°F, approximately 16-20 minutes.
  4. Roast the Squash: Continue roasting the squash until the skin darkens and the flesh is easily pierced, 45-60 minutes. Set aside to cool.

For the Casserole

  1. Grease the Baking Dish: Prepare a 9×13 baking dish.
  2. Sauté Zucchini: Brown zucchini slices in neutral oil, set aside.
  3. Prepare the Vegetable Mixture: Sauté onion, bell pepper, and salt until translucent. Add tomatoes, garlic, Italian seasoning, red pepper flakes, black pepper, and chicken stock. Simmer until tomatoes burst and liquid reduces, about 8-12 minutes.
  4. Combine Ingredients: Scrape squash flesh into a bowl, add shredded chicken, peas, zucchini, and the prepared tomato mixture. Mix well.
  5. Assemble the Casserole: Pour the mixture into the baking dish. Top with mozzarella and Parmesan cheese.
  6. Bake: In a 375°F oven, bake until the casserole is warmed through and the cheese is melted, 35-45 minutes. Allow it to cool for 10 minutes before serving.

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