Garlic Chicken and Spinach Spaghetti Squash
Sarah Vance
Garlic Chicken and Spinach Spaghetti Squash combines tender squash strands, seasoned chicken, fresh spinach, and a creamy garlic parmesan sauce under melted mozzarella. It is a satisfying high-protein dinner that works well for weeknights, leftovers, and lighter comfort food bowls.
Prep Time 20 minutes mins
Cook Time 45 minutes mins
Total Time 1 hour hr 5 minutes mins
Course Dinner
Cuisine American
Servings 4 servings
Calories 452 kcal
Sharp chef's knife
Cutting Board
9x13-inch baking dish
Large skillet
Whisk
Fork
- 1 medium spaghetti squash about 2-3 pounds
- 3 tablespoons olive oil divided
- 1 teaspoon olive oil for brushing squash
- 1/2 cup water
- 1 pound boneless skinless chicken breasts cut into bite-size pieces
- 1 teaspoon poultry seasoning optional
- 2 tablespoons flour
- 1 1/2 cups milk whole milk preferred
- 4-6 cloves garlic minced
- 1/2 cup shredded parmesan cheese
- 1/4 cup shredded mozzarella cheese plus more for topping
- 5 ounces fresh spinach chopped
- salt and pepper to taste
Preheat the oven to 400°F, halve the spaghetti squash lengthwise, scoop out the seeds, brush with 1 teaspoon olive oil, and season lightly.
Place the squash cut-side down in a baking dish with the water and bake for 35-40 minutes, until the strands separate easily with a fork.
Heat 1 tablespoon olive oil in a large skillet, season the chicken with salt, pepper, and poultry seasoning, then cook until lightly golden and cooked through.
Transfer the chicken to a plate, add the remaining olive oil and garlic to the skillet, and cook just until fragrant.
Sprinkle in the flour, stir for 30 seconds, then slowly whisk in the milk until the sauce is smooth and lightly thickened.
Stir in the parmesan and mozzarella until melted, then season the sauce with salt and pepper to taste.
Add the spinach, cooked chicken, and scraped spaghetti squash strands to the skillet and stir until the spinach wilts and the filling is coated.
Spoon the mixture into the squash shells or a baking dish, sprinkle with extra mozzarella, and bake for 8-10 minutes until melted.
Storage: Store cooled leftovers in an airtight container in the refrigerator for 3-4 days.
Reheating: Reheat gently in a covered skillet or microwave until hot, adding a splash of milk if the sauce thickens too much.
Freezing: Freeze portions for up to 2 months, but expect the spaghetti squash texture to soften after thawing.
Expert Tips: Let the cooked squash steam off briefly before mixing it into the sauce so the filling stays creamy instead of watery.
Variations: Add mushrooms, red pepper flakes, kale, or a different melting cheese for a practical change.
Meal Prep: Cook the squash and chicken filling ahead, then assemble and bake with cheese when ready to serve.
Keyword chicken spaghetti squash, creamy spaghetti squash, garlic chicken spaghetti squash, high protein spaghetti squash, spaghetti squash with spinach