Pizza Quinoa Stuffed Portabella Mushrooms

Pizza Quinoa Stuffed Portabella Mushrooms Recipe

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Portabella mushrooms with a pizza-inspired quinoa filling. Adapted from Food Doodles’ Pizza Quinoa Casserole.



  • 4 extra-large portabella mushrooms, stems and gills removed
  • oil mister or olive oil cooking spray
  • salt and pepper, to taste
  • 3/4 cup uncooked quinoa, rinsed thoroughly
  • 1 (8 oz) can tomato sauce
  • 2 garlic cloves, minced
  • 1 tbsp minced fresh basil
  • 1/2 tsp dried oregano
  • 1/2 tsp onion powder
  • pinch of red pepper flakes (optional)
  • 3/4 cup mozzarella cheese, shredded


  1. Preheat oven to 400°F.
  2. Spray both sides of mushrooms and place them bottom down on a rimmed baking sheet. Sprinkle the tops with salt and pepper. Bake for 10 minutes.
  3. While the mushrooms are baking, cook the quinoa according to package directions. Once it’s finished cooking, stir in the tomato sauce, garlic, basil, oregano, onion powder, and pepper flakes. Season to taste with salt and pepper.
  4. After 10 minutes, remove the baking sheet from the oven and flip the mushrooms over. If they fill up with liquid (sometimes they do), drain it off or blot them dry with paper towels.
  5. Divide the quinoa mixture into the mushrooms, then top each one with cheese. Return the baking sheet to the oven and bake for 10 minutes more. You can serve the mushrooms after this or turn on the broiler and broil them until the cheese is browned—about 3–5 minutes (just keep an eye on them so they don’t burn!).