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A delicious spaghetti squash lasagna casserole served in a white baking dish, topped with melted cheese and fresh basil.

Easy Spaghetti Squash Lasagna Casserole Recipe for Keto Dieters

Ideal for keto and gluten-free diets, it's a hearty and satisfying meal the whole family will love!
Prep Time 40 minutes
Cook Time 30 minutes
Course Main Course
Cuisine American
Servings 4 people

Ingredients
  

Ingredients :

  • 1 medium spaghetti squash about 2-3 pounds
  • 1 tablespoon olive oil for roasting the squash
  • 1 pound ground beef or Italian sausage for extra flavor
  • 1 cup marinara sauce sugar-free and low-carb
  • 1 cup ricotta cheese full-fat for keto
  • 1 ½ cups shredded mozzarella cheese divided
  • ½ cup grated Parmesan cheese
  • 1 teaspoon garlic powder
  • 1 teaspoon Italian seasoning
  • Salt and pepper to taste
  • Optional toppings: Fresh basil or parsley for garnish

Instructions
 

Step-by-Step Directions :

  • Preheat the Oven:
  • Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease it to prevent sticking.
  • Prepare the Spaghetti Squash:
  • Carefully cut the spaghetti squash in half lengthwise. Use a spoon to scoop out the seeds and stringy pulp from the center. Drizzle the cut side of each half with olive oil and season lightly with salt and pepper. Place the squash halves cut side down on the prepared baking sheet.
  • Roast the Squash:
  • Roast the spaghetti squash in the preheated oven for 25-30 minutes, or until the flesh is tender and easily shreds with a fork. Once done, remove from the oven and let it cool slightly. Use a fork to scrape the squash into spaghetti-like strands. Reduce the oven temperature to 375°F (190°C).
  • Cook the Meat Sauce:
  • While the squash is roasting, heat a large skillet over medium heat. Add the ground beef or Italian sausage and cook until browned, breaking it into small pieces with a spatula.
  • Drain any extra grease. Then, stir in the marinara sauce, garlic powder, Italian seasoning, and a little salt and pepper. Simmer for 5-7 minutes to let the flavors meld.
  • Assemble the Casserole:
  • In a mixing bowl, combine the ricotta cheese, 1 cup of shredded mozzarella cheese, and grated Parmesan cheese. Mix well.
  • In a greased 9x13-inch baking dish, layer half of the shredded spaghetti squash. Next, add half of the meat sauce.
  • Finally, top with half of the cheese mixture. Repeat the layers, ending with the remaining meat sauce. Sprinkle the top with the remaining ½ cup of shredded mozzarella cheese.
  • Bake the Casserole:
  • Bake in the oven at 375°F (190°C) for 20-25 minutes, or until the cheese is melted and bubbly. For a golden-brown top, broil for an additional 2-3 minutes, keeping a close eye to prevent burning.
  • Serve and Enjoy:
  • Remove the casserole from the oven and let it cool for 5-10 minutes. Garnish with fresh basil or parsley if desired. Slice into portions and serve warm. This gluten-free, low-carb squash lasagna casserole is perfect for a cozy keto dinner!