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pizza casserole in a white baking dish ready to be served

Spaghetti Squash Pizza Casserole (Dairy-Free)

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5 from 1 review

This delicious Spaghetti Squash Pizza Casserole is the perfect dish when you’re craving the flavors of pizza, but you want to have a healthier option. This recipe is not only dairy-free and gluten-free, but it is grain-free, low-carb, Whole30, paleo, and keto-friendly.

  • Total Time: 45 minutes
  • Yield: 5 1x


Units Scale
  • Nonstick cooking spray
  • 1 pound lean ground beef
  • 1/2 onion, chopped
  • 2 garlic cloves, minced
  • 5 cups cooked and shredded spaghetti squash, from about 1 medium spaghetti squash
  • 1 cup chopped or crushed tomatoes, with the juice
  • 1 teaspoon ground oregano
  • 2 eggs, beaten
  • 34 ounces, pepperoni slices
  • 1/4 chopped black olives


  1. Preheat your oven to 400°F. Spray a casserole dish with nonstick cooking spray and set aside.
  2. Heat a large skillet over medium heat. Add the ground beef, onion, and garlic, and use a spatula to break up the meat as it cooks.
  3. Cook the meat until it is just no longer pink, and then add the cooked spaghetti squash, chopped tomatoes, ground oregano, and eggs. Stir to combine the ingredients and then transfer them to the casserole dish. Use a spatula to flatten out the top of the casserole.
  4. Top the casserole with the pepperoni slices and olives and bake for 30 minutes, or until the top of the casserole starts to turn a golden brown.
  5. Remove the casserole from the oven and let it cool for a few minutes before serving.


  1. Cover the casserole dish if you have any leftovers and store it in the refrigerator for up to 4 days. Re-heat before serving.
  2. If you aren’t dairy-free, you can feel free to add shredded cheese on top of the casserole before baking. Or, you can always add a sprinkle of vegan cheese on top to keep the casserole dairy-free.
  3. You can also get creative with the toppings, using mushrooms or whatever you like on a pizza.


  • Serving Size: 1/5 of recipe
  • Calories: 280
  • Sugar: 5.7 g
  • Sodium: 468.2 mg
  • Fat: 13.3 g
  • Saturated Fat: 5.1 g
  • Carbohydrates: 12.9 g
  • Fiber: 2.8 g
  • Protein: 27.4 g
  • Cholesterol: 145.1 mg