Pizza Quinoa Casserole (Vegan!)
If you’re looking for a hearty and satisfying dish that combines the beloved flavors of pizza with the nutritious punch of quinoa, you’ve landed in the right place! This Pizza Quinoa Casserole (Vegan!) is a delightful and wholesome meal that is not only easy to prepare but also packs a flavorful punch. Bursting with vegetables, protein-rich quinoa, and topped with melty vegan mozzarella, this casserole is perfect for a weeknight dinner, meal prep, or even a cozy gathering with friends. Let’s dive into the delicious details!
Why This Pizza Quinoa Casserole (Vegan!) Stands Out

This casserole is a game-changer for those who want to indulge in pizza flavors without the guilt. Here are a few reasons why this recipe stands out:
- Nutrient-Rich: Quinoa is a complete protein, making this dish not only filling but also healthy.
- Flavorful Ingredients: Fresh vegetables and Italian seasonings create a symphony of flavors in every bite.
- Easy to Customize: You can easily modify the recipe to fit your dietary preferences or what you have on hand.
- One-Pan Wonder: Minimal cleanup is required, making it a practical choice for busy nights.
What Goes Into Pizza Quinoa Casserole (Vegan!)
To make this delicious Pizza Quinoa Casserole (Vegan!), you’ll need the following ingredients:
- 1 cup white quinoa (uncooked) – The base of our casserole, providing protein and texture.
- 1 yellow onion – Adds depth and sweetness to the dish.
- 1 green bell pepper – For crunch and a burst of color.
- 8 oz. mushrooms – Adds umami flavor and is a great meat substitute.
- 4 cloves garlic – Infuses the casserole with aromatic goodness.
- 1 cup fresh baby spinach – A nutrient booster that wilts beautifully.
- 3 roma tomatoes – Fresh and juicy, they add a burst of flavor.
- 15 oz. can tomato sauce – The sauce that brings everything together.
- 3/4 cup vegan mozzarella shreds – For that melty, cheesy goodness.
- 2 tsp. Italian seasoning – A blend of herbs that gives it that classic pizza flavor.
- 2 Tbsp. fresh basil – For serving, adding a fresh finish.
What You’ll Need (Gear)
Before you start cooking, gather the following kitchen tools:
- Large pot: For cooking the quinoa.
- Skillet: For sautéing the vegetables.
- Baking dish: To assemble and bake the casserole.
- Wooden spoon: For mixing ingredients.
- Knife and cutting board: For chopping vegetables.
Pizza Quinoa Casserole (Vegan!) Made Stepwise

Let’s get cooking! Follow these simple steps to create your Pizza Quinoa Casserole (Vegan!):
Step 1: Cook the Quinoa
Rinse the quinoa under cold water. In a large pot, combine 1 cup of rinsed quinoa with 2 cups of water. Bring to a boil, then reduce the heat to low, cover, and simmer for about 15 minutes or until the quinoa is fluffy and water is absorbed. Remove from heat and let it sit covered for 5 minutes.
Step 2: Sauté the Vegetables
While the quinoa is cooking, heat a skillet over medium heat. Add a splash of water or vegetable broth and sauté the chopped onion and garlic for about 2-3 minutes until they start to soften. Add the diced green bell pepper and sliced mushrooms, cooking for an additional 5-7 minutes until tender.
Step 3: Add Spinach and Tomatoes
Stir in the fresh baby spinach and diced roma tomatoes. Cook for another 2-3 minutes until the spinach wilts and the tomatoes are slightly softened.
Step 4: Combine Ingredients
In a large mixing bowl, combine the cooked quinoa with the sautéed vegetable mixture. Stir in the tomato sauce, Italian seasoning, and vegan mozzarella shreds until everything is evenly coated.
Step 5: Transfer to Baking Dish
Preheat your oven to 375°F (190°C). Transfer the quinoa mixture into a greased baking dish, spreading it evenly.
Step 6: Bake
Cover the baking dish with foil and bake for 20 minutes. Then, remove the foil and bake for an additional 10 minutes, or until the top is slightly golden and bubbly.
Step 7: Serve and Garnish
Once out of the oven, let the casserole cool for a few minutes. Serve warm, garnished with fresh basil for an extra touch of flavor!
Variations for Dietary Needs

This Pizza Quinoa Casserole (Vegan!) is highly versatile. Here are some ideas for variations based on dietary needs:
- Gluten-Free: This recipe is naturally gluten-free, just ensure your vegan mozzarella is also gluten-free.
- Low-Carb: Substitute quinoa with cauliflower rice for a lower-carb option.
- Spicy: Add red pepper flakes or diced jalapeños for some heat.
- Extra Protein: Mix in cooked lentils or chickpeas for added protein.
Flavor Logic
The combination of flavors in this Pizza Quinoa Casserole (Vegan!) is what makes it so irresistible. The quinoa provides a nutty base, while the sautéed onions, garlic, and bell peppers create a savory foundation. The mushrooms bring a meaty texture, while the fresh spinach and tomatoes add brightness. The tomato sauce ties it all together, and the vegan mozzarella brings that familiar cheesy goodness without dairy. It’s a balanced medley that satisfies both your hunger and your taste buds!
Save for Later: Storage Tips
This casserole is perfect for meal prep! Here are some storage tips:
Store any leftovers in an airtight container in the refrigerator for up to four days. To reheat, simply microwave individual portions or warm it in the oven until heated through. You can also freeze the casserole for up to three months. Just be sure to let it cool completely before transferring it to a freezer-safe container. Thaw overnight in the fridge before reheating.
Popular Questions
Can I make this casserole ahead of time?
Absolutely! You can prepare the casserole up to the baking step, cover it, and store it in the fridge for a day or two before baking. Just add a few extra minutes to the baking time if it’s cold from the fridge.
Can I use other vegetables?
Yes! Feel free to substitute with your favorite veggies like zucchini, broccoli, or even artichoke hearts. Just chop them up and sauté them as you would the others.
Is this casserole suitable for kids?
Definitely! The flavors are mild and familiar, making it a great option for kids. Plus, it’s a sneaky way to get them to eat their veggies!
How do I make it more cheesy?
If you want a cheesier flavor, consider adding nutritional yeast to the mixture or using a vegan cheese sauce in addition to the mozzarella shreds.
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The Last Word
This Pizza Quinoa Casserole (Vegan!) is more than just a meal; it’s an experience filled with warmth, comfort, and deliciousness. Packed with nutritious ingredients and bursting with flavor, it’s a wonderful way to enjoy a classic dish with a healthy twist. Perfect for any occasion, this casserole will become a staple in your home. So gather your ingredients, roll up your sleeves, and let your kitchen come alive with the delightful aroma of a pizza-inspired feast! Enjoy every bite and share the love with family and friends!

Pizza Quinoa Casserole (Vegan!)
Ingredients
Equipment
Method
- Step 1: Rinse the quinoa under cold water. In a large pot, combine 1 cup of rinsed quinoa with 2 cups of water. Bring to a boil, then reduce the heat to low, cover, and simmer for about 15 minutes or until the quinoa is fluffy and water is absorbed. Remove from heat and let it sit covered for 5 minutes.
- Step 2: While the quinoa is cooking, heat a skillet over medium heat. Add a splash of water or vegetable broth and sauté the chopped onion and garlic for about 2-3 minutes until they start to soften. Add the diced green bell pepper and sliced mushrooms, cooking for an additional 5-7 minutes until tender.
- Step 3: Stir in the fresh baby spinach and diced roma tomatoes. Cook for another 2-3 minutes until the spinach wilts and the tomatoes are slightly softened.
- Step 4: In a large mixing bowl, combine the cooked quinoa with the sautéed vegetable mixture. Stir in the tomato sauce, Italian seasoning, and vegan mozzarella shreds until everything is evenly coated.
- Step 5: Preheat your oven to 375°F (190°C). Transfer the quinoa mixture into a greased baking dish, spreading it evenly.
- Step 6: Cover the baking dish with foil and bake for 20 minutes. Then, remove the foil and bake for an additional 10 minutes, or until the top is slightly golden and bubbly.
- Step 7: Once out of the oven, let the casserole cool for a few minutes. Serve warm, garnished with fresh basil for an extra touch of flavor!
Notes
- Store leftovers in an airtight container in the refrigerator for up to four days.
- This casserole can be frozen for up to three months; let it cool completely before freezing.
- Feel free to substitute quinoa with cauliflower rice for a lower-carb option.
