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A Spaghetti Squash Bake casserole topped with melted cheese is being served from a white dish with tongs.
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Spaghetti Squash Casserole

The winter squash recipe that finally earns a permanent spot in your dinner rotation.
Prep Time20 minutes
Cook Time1 hour 5 minutes
Rest Time10 minutes
Total Time1 hour 35 minutes
Course: Main Dish
Cuisine: American
Servings: 6 Servings
Calories: 421kcal
Author: Laura

Ingredients

  • 3 pounds spaghetti squash roughly one large squash
  • 2 tbsp olive oil
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 1 tsp garlic powder
  • 1 tsp Italian seasoning
  • 1 small onion diced
  • 3 cloves garlic minced
  • 2 cups marinara sauce
  • 1 1/2 cups mozzarella cheese shredded
  • 1/2 cup Parmesan cheese grated
  • 1 cup ricotta cheese
  • 1 large egg
  • 3/4 lb ground beef cooked

Instructions

  • Preheat the oven to 400°F
  • Slice the spaghetti squash in half lengthwise and scoop out the seeds
    Halved spaghetti squash on parchment paper with a bottle of oil, surrounded by bowls of ground meat, tomato sauce, and other ingredients—all the essentials you need to create a delicious Spaghetti Squash Bake.
  • Drizzle with olive oil and sprinkle with the salt, black pepper, and garlic powder
    Two spaghetti squash halves are placed cut side up on parchment paper, sprinkled with salt and pepper. Surrounding bowls contain ground meat, tomato sauce, and other ingredients for a delicious Spaghetti Squash Bake.
  • Place the squash cut side down on a baking sheet and roast for 35-45 minutes, or until tender
    Two halved spaghetti squashes on a parchment-lined baking sheet, surrounded by bowls of sauce, ground meat, and other ingredients—all set for assembling a hearty Spaghetti Squash Bake.
  • Once cooked let the squash cool slightly, then scrape the flesh into strands with a fork
    A fork scrapes cooked spaghetti squash inside its roasted shell for a delicious Spaghetti Squash Bake, with pepper and seasonings sprinkled on top, all on a parchment-lined baking sheet.
  • If using uncooked ground beef, cook it while the squash bakes
  • In a skillet, sauté onion in a little olive oil until soft, then add garlic and cook 1 minute more
    A white skillet with chopped onions and garlic sautéing, surrounded by bowls of tomato sauce, cooked ground beef, ricotta cheese, and spices on a white surface—perfect ingredients for assembling a hearty Spaghetti Squash Bake.
  • Stir in the ground beef, marinara sauce, Italian seasoning, and any remaining salt and black pepper
    White pan with diced onions, tomato sauce, and spices forms the flavorful base for this Spaghetti Squash Bake. Surrounding bowls contain cooked ground beef, shredded cheese, and ricotta cheese on a white surface.
  • Simmer for a few minutes, taste and adjust seasonings as desired
  • In a large bowl, combine the spaghetti squash strands with the marinara mixture
    A metal bowl with shredded spaghetti squash topped with red tomato sauce, reminiscent of a Spaghetti Squash Bake, sits next to small bowls of cooked ground meat, shredded cheese, and a white creamy ingredient.
  • Stir in the ricotta, half of the mozzarella, the Parmesan, and the egg if using
    A metal bowl with shredded cheese, ricotta, grated parmesan, tomato sauce, and shredded squash—perfect for preparing a delicious Spaghetti Squash Bake; ground beef and melted butter in small bowls nearby.
  • Spread the mixture into a greased 9x13-inch baking dish
    Rectangular white baking dish with a layer of mixed meat, sauce, and cheese—perfect for a comforting Spaghetti Squash Bake. Two small glass bowls with grated cheese are on either side of the dish on a white surface.
  • Top with the remaining mozzarella and a sprinkle of Parmesan
    Rectangular white baking dish filled with a baked Spaghetti Squash Bake topped with shredded cheese, viewed from above on a white background.
  • Bake at 375°F for 20-25 minutes, or until bubbly and golden on top
    A rectangular white baking dish filled with baked Spaghetti Squash Bake, topped with melted cheese, sits on a white surface with some green herbs visible in the corner.
  • Let rest for 10 minutes before serving
    A serving of Spaghetti Squash Bake with melted cheese and ground meat, garnished with parsley, on a white plate with a fork.

Video

Nutrition

Serving: 1 Serving | Calories: 421kcal | Carbohydrates: 20g | Protein: 29g | Fat: 26g | Saturated Fat: 12g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 10g | Trans Fat: 0.4g | Cholesterol: 117mg | Sodium: 1196mg | Potassium: 718mg | Fiber: 4g | Sugar: 8g | Vitamin A: 1037IU | Vitamin C: 10mg | Calcium: 398mg | Iron: 3mg