Spaghetti squash casserole recipe

Easy Spaghetti Squash Casserole

prep time
cook time
total time
makes
6 servings

We prepared our easy spaghetti squash casserole recipe for days when we’re completely famished but still trying to maintain a healthy attitude toward lunch and dinner. Spaghetti squash is shockingly low in carbs and calories—it’s the ultimate ingredient hack!

We included all of our equally low-carb Italian favorites like marinara sauce, Parmesan cheese, olive oil and lean ground beef. Combined with seasonings like basil, thyme and minced garlic, dinner will be table ready in 45 minutes or less.

Accompany this hearty (and healthy!) casserole with our crisp Bibb lettuce salad or grilled romaine. Our kale and cabbage confetti salad is also an excellent choice!

Spaghetti Squash Casserole Recipe

what you'll need
  • 1 spaghetti squash, prepared
  • 1/2 tsp dried basil
  • 1/4 tsp ground thyme
  • 1 Tbsp olive oil
  • 1 onion, diced
  • 2 lbs ground beef
  • 2 cloves garlic, minced
  • 1 1/2 cups marinara sauce
  • 1/2 tsp kosher salt
  • 1/4 cup Parmesan cheese, grated
  • 3/4 cup mozzarella cheese, grated
  • 1/4 cup panko breadcrumbs
  • red pepper flakes, for sprinkling
Nutrition Facts
Spaghetti Squash Casserole Recipe
Amount Per Serving
Calories 587 Calories from Fat 333
% Daily Value*
Total Fat 37g 57%
Saturated Fat 14g 70%
Trans Fat 1g
Polyunsaturated Fat 3g
Monounsaturated Fat 16g
Cholesterol 120mg 40%
Sodium 1025mg 43%
Potassium 917mg 26%
Total Carbohydrates 23g 8%
Dietary Fiber 3g 12%
Sugars 10g
Protein 39g 78%
Vitamin A 17%
Vitamin C 17%
Calcium 33%
Iron 24%
* Percent Daily Values are based on a 2000 calorie diet.
let's do it
  1. Prepare spaghetti squash according to recipe. Stir in basil and thyme then set aside.
  2. Preheat oven to 375 degrees.
  3. Heat olive oil in a large sauté pan over medium heat, then add onion and ground beef, breaking it up into small pieces. Cook until browned. Add garlic and cook for 1 additional minute. Add marinara sauce to meat and stir to combine.
  4. Place half of the prepared spaghetti squash in bottom of a greased 2-qt casserole dish. Spread half of meat sauce over squash. Top with a layer of mozzarella cheese and add remaining squash. Layer with remaining meat sauce.
  5. Mix Parmesan cheese, mozzarella cheese and panko together in a small bowl. Sprinkle topping over entire dish, cover with aluminum foil then bake 20 minutes.
  6. Uncover and continue baking an additional 10 minutes or until hot and bubbly. Serve and enjoy immediately.
Cheryl Says

Give the red pepper flakes a go if you like it hot, hot, hot!

Easy spaghetti squash casserole recipe