Stuffed Portobello Mushroom with Quinoa and Spinach
Allison Dennison
Stuffed Portobello Mushroom with Quinoa and Spinach is a flavorful, nutrient-packed dish perfect for clean eating. Tender Portobello mushrooms are stuffed with a savory quinoa and spinach filling, enhanced with sun-dried tomatoes and a cheesy topping. This versatile recipe is gluten-free, vegetarian, and easily customizable to suit any diet, making it ideal for weeknight dinners or impressive gatherings. Ready in under 30 minutes, it’s a delicious and healthy choice that’s sure to satisfy!
Prep Time 15 minutes mins
Cook Time 25 minutes mins
Total Time 40 minutes mins
Course Dinner, Lunch, Main Course
Cuisine Clean Eats, Mediterranean-inspired, Vegetarian/Plant-Based
Servings 4
Calories 250 kcal
Cutting Board – For chopping spinach, sun-dried tomatoes, and other ingredients.
Chef’s Knife – For dicing vegetables and removing mushroom stems.
Mixing Bowl – To combine the quinoa filling ingredients.
Large Spoon – For scooping and stuffing the mushroom caps.
Baking Sheet – To arrange and bake the stuffed mushrooms.
Parchment Paper or Baking Mat – To line the baking sheet and prevent sticking.
Skillet or Sauté Pan – For cooking the onions, garlic, and spinach before mixing into the stuffing.
Spatula or Wooden Spoon – For stirring ingredients in the skillet.
Measuring Cups and Spoons – To measure out quinoa, seasonings, and other ingredients accurately.
Small Saucepan – For cooking the quinoa (if not pre-cooked).
Brush or Paper Towel – To clean the Portobello mushrooms and apply olive oil.
Oven or Air Fryer – For baking the stuffed mushrooms.
Tongs or Oven Mitts – For safely removing the baking sheet from the oven.
Serving Platter – To beautifully present the baked mushrooms.
For the mushrooms:
- 4 large Portobello mushrooms stems removed and gills scraped
- 2 tbsp olive oil
- 1/2 tsp garlic powder
- Salt and pepper to taste
For the stuffing:
- 1 cup cooked quinoa follow package instructions
- 2 cups fresh spinach chopped
- 1 small onion finely diced
- 2 garlic cloves minced
- 1/4 cup sun-dried tomatoes chopped
- 1/4 cup feta cheese optional, or substitute with vegan feta
- 2 tbsp fresh parsley chopped (plus more for garnish)
- 1/2 tsp smoked paprika
- 1/2 tsp Italian seasoning
- Salt and pepper to taste
- 2 tbsp olive oil
For topping:
- 1/4 cup shredded mozzarella or dairy-free cheese alternative
- 2 tbsp grated Parmesan optional
Step 1: Prepare the Mushrooms
Preheat your oven to 375°F (190°C).
Clean the mushrooms by gently wiping them with a damp paper towel. Remove the stems and use a spoon to scrape out the gills.
Brush the mushrooms with olive oil, then sprinkle with garlic powder, salt, and pepper. Arrange them cap-side down on a baking sheet lined with parchment paper.
Step 3: Make the Filling
Heat 2 tablespoons of olive oil in a skillet over medium heat. Add the diced onion and sauté until translucent, about 3-4 minutes.
Stir in the minced garlic and cook for another minute until fragrant.
Add the chopped spinach and cook until wilted, about 2 minutes.
Remove the skillet from heat and stir in the cooked quinoa, sun-dried tomatoes, feta cheese, parsley, smoked paprika, Italian seasoning, salt, and pepper. Mix until well combined.
Step 4: Assemble and Bake
Spoon the filling evenly into each mushroom cap, pressing it down gently to pack it in.
Sprinkle shredded mozzarella and Parmesan cheese (if using) on top of the filling.
Bake in the preheated oven for 20-25 minutes, or until the mushrooms are tender and the cheese is melted and bubbly.
Step 5: Garnish and Serve
Make Ahead and Storage
Make Ahead:
- You can prepare the stuffing up to 2 days in advance and store it in an airtight container in the fridge. When ready to assemble, simply stuff the mushrooms and bake.
- The mushrooms can also be cleaned, prepped, and stored in the fridge until you’re ready to use them.
Storage:
- Store leftover stuffed mushrooms in an airtight container in the refrigerator for up to 3 days.
- Reheat in the oven at 350°F (175°C) for 10-15 minutes or until warmed through.
- Avoid freezing as the mushrooms may become too watery upon thawing.
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