Healthy Spaghetti Squash Casserole

By: CALVIN ROURKE

Published: September 07, 2025

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why make this recipe

Healthy Spaghetti Squash Casserole is a fantastic option for those looking to enjoy a nutritious and filling meal. This dish is a great way to incorporate more vegetables into your diet while still satisfying your craving for comfort food. The spaghetti squash serves as a healthy noodle substitute, making it lower in carbs than traditional pasta. Plus, it’s packed with protein from the meat and cheese. It’s easy to make and perfect for the whole family!

how to make Healthy Spaghetti Squash Casserole

Ingredients:

  • 1 medium spaghetti squash
  • 1 pound ground beef or turkey
  • 1 onion, chopped
  • 2 cloves garlic, minced
  • 1 can (15 oz) tomato sauce
  • 1 can (14.5 oz) diced tomatoes
  • 1 teaspoon Italian seasoning
  • Salt and pepper to taste
  • 1 cup shredded cheese (mozzarella or cheddar)
  • Olive oil for cooking

Directions:

  1. Preheat the oven to 350°F (175°C).
  2. Cut the spaghetti squash in half lengthwise and scoop out the seeds. Brush the insides with olive oil and season with salt and pepper. Place cut side down on a baking sheet and bake for 30-40 minutes until tender.
  3. In a large skillet, heat olive oil over medium heat. Add onion and garlic, cooking until softened.
  4. Add ground meat to the skillet and cook until browned. Drain excess fat if necessary.
  5. Stir in tomato sauce, diced tomatoes, Italian seasoning, salt, and pepper. Simmer for 10 minutes.
  6. Once the squash is done, use a fork to scrape the flesh into spaghetti-like strands.
  7. In a baking dish, mix the spaghetti squash with the meat sauce, then top with shredded cheese.
  8. Bake for an additional 15-20 minutes until the cheese is melted and bubbly.
  9. Serve hot and enjoy!

how to serve Healthy Spaghetti Squash Casserole

Serve the Healthy Spaghetti Squash Casserole warm, right out of the oven. It’s great on its own or paired with a fresh green salad. You can also consider serving it with whole grain bread or garlic bread for a more hearty meal option.

how to store Healthy Spaghetti Squash Casserole

If you have leftovers, store them in an airtight container in the refrigerator. The casserole can last up to 4 days. To reheat, simply microwave individual portions or bake in the oven until warmed through. You can also freeze it for longer storage; just make sure to use a freezer-safe container.

tips to make Healthy Spaghetti Squash Casserole

  • Ensure you bake the spaghetti squash until it’s soft for easier handling.
  • If you prefer a vegetarian option, you can substitute the meat with black beans or lentils.
  • Experiment with different cheeses, like parmesan or a dairy-free alternative, to mix things up.
  • Add extra veggies like bell peppers or spinach for more nutrition.

variation

For a spicy twist, you can add some crushed red pepper flakes to the meat sauce. You might also consider swapping the Italian seasoning for taco seasoning for a flavorful variation.

FAQs

1. Can I use a different type of squash?
Yes, you can use other squashes like acorn or butternut, but the texture and flavor may vary.

2. Is this dish gluten-free?
Yes, Healthy Spaghetti Squash Casserole is naturally gluten-free since it uses spaghetti squash instead of traditional pasta.

3. Can I make this casserole ahead of time?
Absolutely! You can prepare it a day in advance and store it in the fridge before baking when you’re ready to serve.

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Healthy Spaghetti Squash Casserole

A nutritious and filling casserole featuring spaghetti squash, ground meat, and cheese, offering a healthy alternative to traditional pasta dishes.

Prep Time 15 minutes
Cook Time 50 minutes
Total Time 65 minutes
  • By: Calvin Rourke
  • Category: DINNER
  • Difficulty: Not specified
  • Cuisine: Not specified
  • Yield: 4 Servings
  • Dietary: None

Ingredients

  • 01 1 medium spaghetti squash
  • 02 1 pound ground beef or turkey
  • 03 1 onion, chopped
  • 04 2 cloves garlic, minced
  • 05 1 can (15 oz) tomato sauce
  • 06 1 can (14.5 oz) diced tomatoes
  • 07 1 teaspoon Italian seasoning
  • 08 Salt and pepper to taste
  • 09 1 cup shredded cheese (mozzarella or cheddar)
  • 10 Olive oil for cooking

Instructions

Step 01

1. Preheat the oven to 350°F (175°C).

Step 02

2. Cut the spaghetti squash in half lengthwise and scoop out the seeds. Brush the insides with olive oil and season with salt and pepper. Place cut side down on a baking sheet and bake for 30-40 minutes until tender.

Step 03

3. In a large skillet, heat olive oil over medium heat. Add onion and garlic, cooking until softened.

Step 04

4. Add ground meat to the skillet and cook until browned. Drain excess fat if necessary.

Step 05

5. Stir in tomato sauce, diced tomatoes, Italian seasoning, salt, and pepper. Simmer for 10 minutes.

Step 06

6. Once the squash is done, use a fork to scrape the flesh into spaghetti-like strands.

Step 07

7. In a baking dish, mix the spaghetti squash with the meat sauce, then top with shredded cheese.

Step 08

8. Bake for an additional 15-20 minutes until the cheese is melted and bubbly.

Step 09

9. Serve hot and enjoy!