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spaghetti squash with pumpkin casserole.
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4.25 from 4 votes

Creamy Pumpkin Casserole

This Creamy Pumpkin Casserole is my new favorite fall fish. This optionally dairy-free casserole has pumpkin, spinach, and chicken and is topped with a delicious pumpkin sauce and baked to perfection. It's Paleo and Whole30, too.
Prep Time10 minutes
Cook Time45 minutes
Total Time55 minutes
Servings: 4
Author: Lexi


  • 1 large spaghetti squash about 5 cups cooked
  • 1 shallot minced
  • 1 onion minced
  • 2 garlic cloves minced
  • 4 cups pumpkin or squash of choice peeled and diced
  • 1 pound boneless skinless chicken breasts cubed
  • 2 cups spinach

For the sauce:

  • 1/4 cup mayo homemade or store-bought
  • 2 tablespoons pumpkin puree
  • 2 tablespoons almond milk
  • 1/2 teaspoon onion powder
  • 1/4 teaspoon fine sea salt more to taste
  • 1/4 teaspoon garlic powder
  • 1/4 teaspoon black pepper
  • 1 tablespoon fresh thyme
  • Pinch of cinnamon

For topping:

  • 1/3 cup fresh Parmesan cheese optional


  • Cook spaghetti squash. Find instructions here.
  • In a large skillet over medium heat heat 1 tablespoon oil and add onion shallots, and garlic cook for 1-2 minutes, until shallot just starts to become translucent. Add in pumpkin or squash and cook until just about tender, about 8 minutes. Add in chicken, and a big pinch of salt and pepper and continue cook until no pink remains, about 8 minutes. Add in 2 cups of spinach and cook for 3-5 minutes, until spinach starts to wilt. Remove from heat and set aside.
  • In a small bowl mix all sauce ingredients together and set aside. Grease a 8" x 8" (or similar sized) casserole dish and set aside.
  • Take spaghetti squash out of oven, let cool. Using a fork scrape out the spaghetti squash into a greased casserole pan. Add in pumpkin and chicken mixture, and top with the sauce. Top with Parmesan, if desired.
  • Bake at 400 degrees for 10 minutes, and broil for 3-5 minutes, or until the cheese is melted.
  • Let cool for 10 minutes before serving.


Serving: 1/4 recipe | Calories: 442kcal | Carbohydrates: 39.4g | Protein: 38g | Fat: 16g | Saturated Fat: 3.6g | Cholesterol: 106mg | Sodium: 434mg | Fiber: 8.6g | Sugar: 13.4g