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6-Ingredient Spaghetti Squash Pizza Casserole (Dairy-Free, Egg-Free, Gluten-Free, Vegan)

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6-Ingredient Spaghetti Squash Pizza Casserole is dairy-free, egg-free, gluten-free and vegan. This dinner casserole is low-carb, hearty, and healthy!

6-Ingredient Spaghetti Squash Pizza Casserole is dairy-free, egg-free, gluten-free and vegan. This dinner casserole is low-carb, hearty, and healthy!

Spaghetti squash is one of those ingredients that I adore but often forget about. Sorry, spaghetti squash! It’s so versatile, usually on sale, and yields so much yumminess.

My friend Christina, over at The Whole Cook has an awesome recipe for Baked Spaghetti Squash Casserole and that’s what inspired this recipe. One of my most popular blog posts, How To Cook Spaghetti Squash in the Oven, recently got a little makeover so I’ve been cooking with this squash a lot more than usual.

I realize that a lot (A LOT) of my recipes are either taco related or pizza, but I haven’t heard any complaints! I could seriously live off tacos and pizza, they’re just so delicious and always hit the spot. Sometimes though, I like to keep myself in check and eat a little healthier.

This recipe is perfect for when you’re craving a cheesy and comforting pizza, but you haven’t worked out all week… Oops, guilty!

6-Ingredient Spaghetti Squash Pizza Casserole is dairy-free, egg-free, gluten-free and vegan. This dinner casserole is low-carb, hearty, and healthy

This spaghetti squash pizza casserole is seriously so simple, as the oven does most of the work. It’s one of those recipes perfect for weeknights that also serve as an awesome lunch the next day.

I used to hate leftovers but they truly make my life so much easier now that I’m cooking just about all my meals. If you have any casserole leftovers, just store the baking dish covered in your refrigerator and when you’re ready to reheat, grab a serving, and pop it in the microwave.

6-Ingredient Spaghetti Squash Pizza Casserole

How to Make Spaghetti Squash Pizza Casserole

Start by cooking down your onions and mushrooms, then stir in cooked marinara sauce, olives, and your other favorite pizza toppings. Transfer to a prepared casserole dish, top with vegan cheese and any additional toppings you have (maybe some basil or crushed red pepper). Bake for 25 minutes, remove from oven, and enjoy!

6-Ingredient Spaghetti Squash Pizza Casserole Recipe

6-Ingredient Spaghetti Squash Pizza Casserole is dairy-free, egg-free, gluten-free and vegan. This dinner casserole is low-carb, hearty, and healthy!
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5 from 7 votes

6-Ingredient Spaghetti Squash Pizza Casserole

6-Ingredient Spaghetti Squash Pizza Casserole is dairy-free, egg-free, gluten-free and vegan. This dinner casserole is low-carb, hearty, and healthy!
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes

Ingredients

  • 1 medium spaghetti squash cooked and shredded
  • 1 small onion chopped
  • 1/2 cup sliced mushrooms
  • 1/4 cup sliced black olives
  • 1 cup marinara sauce
  • 1 cup vegan shredded cheese
  • Salt and pepper to taste

Instructions

  • Preheat oven to 375F. In a medium-large sauté pan, cook onion and mushroom until soft and translucent.
  • Turn off the heat and mix in black olives, spaghetti squash, salt, and pepper. Stir in marinara until well combined.
  • Transfer mixture to a prepared casserole dish, top with vegan shredded cheese and any additional toppings.
  • Bake for 25 minutes or until heated through and cheese has melted.
  • Remove from oven and let cool slightly. Serve and enjoy!
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Spaghetti Squash Pizza Casserole is dairy-free, egg-free, gluten-free and vegan. This dinner casserole is low-carb, hearty, and healthy

Reader Interactions

Comments

  1. Amanda

    I’ve done something similar with gluten free pasta, but I really love the idea of the spaghetti squash. It is a great way to lighten up the meal. I’m glad to see that it reheats well, too. Perfect for my husband’s lunches!

    Reply

  5. Shams

    5 stars
    Hi Jenna,
    wow, I never have seen anything like this!! Can’t wait to try this recipe, I know my family will love it! If I don’t use marinara sauce, is it test well?

    Reply

  8. Emily

    I love spaghetti squash. This recipe looks delicious and easy! I love that it’s gluten free — it’s a great low carb, gluten free alternative to pizza!

    Reply

  10. Denise

    Oh yum, this looks like a great treat. We recently started a piscatarian diet and we are loving trying out different vegetarian dinner option, will save this for later. Thanks for sharing.

    Reply

  12. Gemma

    Love spaghetti squash and the bonus is my kids love it too. I have them thinking it really is pasta, which they love. This looks like a recipe they would love.

    Reply

  22. Jules Shepard

    You post all the taco and pizza themed recipes you want! This looks delicious and I’ve just thought about making something with spaghetti squash so perfect timing! Great recipe!

    Reply

    • Jenna | The Urben Life

      Thanks Nicole 🙂 I’m lactose intolerant too. I’ve been trying different vegan cheeses for years. My favorites are Daiya Cutting Board, Go Veggie, and So Delicious. I like cheese alternatives but my husband isn’t a fan so he just takes his meals without it.

      Reply

  25. Tatiana

    I think I might actually be able to do this! My oldest daughter is a vegan, and I constantly struggle to find something I can make, something she can eat, and something the rest of the family would actually eat.

    Reply

  27. Sara

    I don’t have a lot of experience cooking with squash so I am always looking for new ideas. I also love pastas but the carbs are just killer!!

    Reply

  28. Cayla

    Jenna, this recipe looks amazing! I am obsessed with pizza and love all casseroles and spaghetti squash, so I look forward to trying this recipe. Such a perk that it’s healthy too!!

    Reply

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