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A golden spaghetti squash half filled with creamy chicken Alfredo, wilted spinach, and bubbling melted cheese, served on a white plate.

Healthy Chicken Alfredo Spaghetti Squash Boats with Greek Yogurt Sauce


  • Author: Samantha Brooks
  • Total Time: 1 hour 15 minutes
  • Yield: 2 large servings (4 halves) 1x

Description

The ultimate comforting, low-carb alternative to traditional pasta. Utilizing the natural, spaghetti-like strands of roasted squash and a clever, lighter Alfredo sauce made with Greek yogurt and cream cheese, these ‘squash boats’ are high in protein and nutrients while remaining incredibly creamy and satisfying.


Ingredients

Scale

Spaghetti Squash

  • 1 medium spaghetti squash (45 lbs)
  • 1 tbsp olive oil

Lighter Alfredo Sauce

  • 1 cup plain Greek yogurt, 1 cup low-sodium chicken stock
  • 1/2 cup fresh Parmesan, 1/4 cup softened cream cheese
  • 2 tbsp unsalted butter, 1/2 tbsp minced garlic
  • 2 tsp cornstarch (mixed with 1 tbsp water)
  • 1 tsp each: dried basil, oregano, parsley, plus salt/pepper

Add-ins & Toppings

  • 8 oz cooked chicken breast (cubed)
  • 2 cups baby spinach, 1 cup shredded mozzarella

Instructions

Roast: Preheat oven to 400°F. Halve squash, remove seeds, brush with oil, and bake flesh-side down for 45–55 mins until soft. Flip over and lower oven to 350°F.

Sauce: Sauté garlic in butter. Whisk in stock and cornstarch slurry; bring to a boil then reduce heat. Stir in cream cheese and Parmesan until smooth. Whisk in herbs and Greek yogurt.

Combine: Fold chicken and spinach into the sauce until spinach wilts. Shred the squash interior with a fork.

Stuff & Bake: Distribute the mixture into the squash halves. Top with mozzarella and bake for 5–10 mins until bubbly (broil for the last 2 mins).

Notes

Flesh-Side Down: Roasting the squash face-down is essential; it traps steam inside to hydrate the strands and prevents the edges from drying out during the long roast.

The Squeeze Test: If the shell gives easily under light pressure (using a mitt!), the strands inside are perfectly tender and ready to be shredded.

Yogurt Science: Use Greek yogurt for maximum thickness. If the sauce becomes too viscous after combining, whisk in a tablespoon of extra broth to achieve your preferred creamy consistency.

  • Prep Time: 15 minutes
  • Cook Time: 1 hour
  • Category: Main Course
  • Method: Roasting / Stovetop Sauce
  • Cuisine: Italian-American Fusion

Nutrition

  • Serving Size: 1/2 squash boat
  • Calories: 445
  • Sugar: 8
  • Sodium: 620
  • Fat: 26
  • Saturated Fat: 15
  • Unsaturated Fat: 11
  • Trans Fat: 0
  • Carbohydrates: 18
  • Fiber: 4
  • Protein: 38
  • Cholesterol: 110

Keywords: chicken alfredo spaghetti squash, low carb alfredo, spaghetti squash boats, healthy italian dinner, greek yogurt alfredo sauce