Name: Vegan Spaghetti Squash Pizza Casserole
Prep time: 30 min
Cook time: 25 min
Total time: 55 min
Yield: 6 servings
Cuisine: Other

The Urben Life Verified

October 3, 2025

8 Ingredients

EASY

This 6-ingredient spaghetti squash pizza casserole recipe is vegan and gluten free. Great for a simple weeknight dinner or meal prep. This dish is filled with fresh veggies like mushroom and onion. Feel free to add other vegetables like bell pepper or spinach! t's seriously so simple, as the oven does most of the work. It's one of those recipes perfect for busy weeknights that also serve as an awesome lunch the next day.

Vegan Spaghetti Squash Pizza Casserole cover

From the Cook

1/5

Vegan Spaghetti Squash Pizza Casserole

The Urben Life Verified

Ingredients

servings

WarningTreenuts and 3 other allergens identified

Instructions

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Instructions

Preheat the oven to 400F and line a baking sheet with parchment paper. Cut the ends of the squash and carefully slice in half lengthwise. Scoop out the seeds, drizzle with olive oil, and season with salt and pepper. Arrange cut-side down and bake until tender, 30-45 minutes. Remove from the oven and let cool slightly. Use a fork to scrape the squash and create long spaghetti-like strands.

Towards the end of the squash baking, cook onion and mushroom in a large pan over low-medium heat. You want the onion to be soft and translucent and the mushroom cooked down a bit.

Turn off the heat and mix in black olives, spaghetti squash, salt, and pepper. Stir in marinara until well combined.

Transfer mixture to a 9x13-inch casserole dish, top with vegan shredded cheese, and any additional toppings.

Reduce the oven temperature to 375F. 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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My Calorie Intake

Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

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About the Cook

The Urben Life

Hey there, I'm Jenna Urben! I'm the recipe developer, photographer, and writer behind The Urben Life. My mission is to share allergy-friendly recipes the entire family will love.