Vegetable Stuffed Portabella Mushrooms Recipe
Introduction
These Vegetable Stuffed Portabella Mushrooms make a flavorful and satisfying dish perfect for a light dinner or an impressive appetizer. Filled with a colorful mix of sautéed vegetables and topped with melted cheese, they are as delicious as they are visually appealing.

Ingredients
- 4 large portabella mushrooms, wiped with a damp paper towel
- 2 tablespoons olive oil, plus more for coating the mushrooms
- 1 large sweet onion, diced
- 2 medium zucchini, diced
- 1 roasted red pepper, diced
- 4–6 sun dried tomatoes, chopped
- 2–3 cloves garlic, minced
- 1 large handful of spinach
- 1 pinch dried oregano, crushed
- Dash of crushed red pepper flakes
- Freshly ground black pepper, to taste
- 1/4 cup dried breadcrumbs (see notes for gluten-free option)
- 1/4 cup grated Parmesan (see notes for vegetarian/vegan alternatives)
- 1/4 cup shredded mozzarella cheese (see notes for vegan option)
Instructions
- Step 1: Preheat your oven to 375 degrees Fahrenheit. Line a sided baking sheet with parchment paper.
- Step 2: Using a small spoon, gently scoop out the gills from the inside of each mushroom. Remove the stalks with a small knife.
- Step 3: Rub each mushroom with a bit of olive oil and place them on the baking sheet, stalk side up.
- Step 4: Heat olive oil in a 12-inch sauté pan over medium-high heat. Add the diced onions and sauté for 3 to 4 minutes.
- Step 5: Add the diced zucchini and cook until it begins to soften, then add the roasted red pepper and sun dried tomatoes. Continue cooking for a few minutes until the onions are translucent and soft.
- Step 6: Stir in the minced garlic and cook for one minute, then add the spinach and cook until wilted.
- Step 7: Remove the pan from heat and add dried oregano, crushed red pepper flakes, black pepper, breadcrumbs, and grated Parmesan. Stir well to combine.
- Step 8: Divide the mixture evenly into four portions. Stuff each mushroom with one portion, pressing the filling gently to pack it in.
- Step 9: Bake the stuffed mushrooms in the oven for 35 to 40 minutes.
- Step 10: Remove from oven, top each mushroom with about 1 tablespoon of shredded mozzarella, and return to the oven. Bake for an additional 5 minutes or until the cheese is melted and bubbly.
- Step 11: Serve warm and enjoy your delicious vegetable stuffed portabella mushrooms.
Tips & Variations
- For gluten-free breadcrumbs, use crushed gluten-free crackers or almond meal.
- To make this dish vegan, substitute Parmesan and mozzarella with your favorite plant-based cheeses.
- If you prefer a spicier filling, increase the crushed red pepper flakes to taste.
- Adding chopped nuts like walnuts or pine nuts can add a nice crunch and depth of flavor.
Storage
Store any leftover stuffed mushrooms in an airtight container in the refrigerator for up to 3 days. Reheat gently in a low oven (around 300°F) or in the microwave until warmed through. Avoid overheating to keep mushrooms tender and prevent drying out.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I prepare the mushrooms ahead of time?
Yes, you can prepare the stuffing and clean the mushrooms in advance. Assemble them just before baking to ensure the mushrooms stay fresh and don’t become soggy.
What can I serve with stuffed portabella mushrooms?
They pair well with a fresh green salad, quinoa, or roasted vegetables for a complete meal. A side of crusty bread is also perfect to soak up any extra flavors.
PrintVegetable Stuffed Portabella Mushrooms Recipe
Delightful vegetable stuffed portabella mushrooms filled with a savory mix of sautéed onions, zucchini, roasted red pepper, sun-dried tomatoes, garlic, spinach, and a blend of breadcrumbs and cheeses, baked to perfection for a hearty and healthy vegetarian meal or appetizer.
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour
- Yield: 4 servings 1x
- Category: Main Course
- Method: Baking
- Cuisine: Italian
- Diet: Vegetarian
Ingredients
Mushrooms
- 4 large portabella mushrooms, wiped with a damp paper towel
Vegetable Filling
- 2 tablespoons olive oil, plus more for coating the mushrooms
- 1 large sweet onion, diced
- 2 medium zucchini, diced
- 1 roasted red pepper, diced
- 4–6 sun-dried tomatoes, chopped
- 2–3 cloves garlic, minced
- 1 large handful of spinach
Seasonings and Cheese
- 1 pinch dried oregano, crushed between your fingers
- Dash of crushed red pepper flakes
- Freshly ground black pepper, to taste
- 1/4 cup dried breadcrumbs (use gluten-free breadcrumbs to make this gluten free)
- 1/4 cup grated Parmesan cheese (use vegan Parmesan to make this vegan)
- 1/4 cup shredded mozzarella cheese (use vegan mozzarella to make this vegan)
Instructions
- Preheat Oven: Preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius). Line a sided baking sheet with parchment paper to prepare for baking the mushrooms.
- Prepare Mushrooms: Using a small spoon, gently scoop out the gills from the inside of each portabella mushroom. With a small knife, carefully remove the mushroom stalks. Rub each mushroom lightly with olive oil and place them on the prepared baking sheet, stalk side up.
- Sauté Vegetables: Heat 2 tablespoons of olive oil in a 12-inch sauté pan over medium-high heat. Add the diced sweet onion and sauté for 3 to 4 minutes until translucent. Add the diced zucchini and cook until it begins to soften. Stir in the diced roasted red pepper and chopped sun-dried tomatoes, cooking for a few more minutes. When the onions are soft and translucent, add the minced garlic and cook for one minute more. Add the spinach last and cook until it wilts.
- Combine Filling Ingredients: Remove the pan from heat. Stir in the dried oregano, crushed red pepper flakes, freshly ground black pepper, dried breadcrumbs, and grated Parmesan cheese until evenly combined.
- Stuff Mushrooms: Divide the vegetable mixture into four equal portions. Spread the mixture evenly in the pan and slice like a pie into quarters with a spoon. Spoon each quartered mixture evenly into each prepared portabella mushroom cap.
- Bake Mushrooms: Place the stuffed mushrooms in the preheated oven and bake for about 35 to 40 minutes.
- Add Cheese & Finish Baking: After the initial baking time, top each mushroom with approximately one tablespoon of shredded mozzarella cheese. Return to the oven and bake for an additional 5 to 10 minutes, or until the cheese is melted and golden brown.
Notes
- For a gluten-free version, substitute the dried breadcrumbs with gluten-free breadcrumbs.
- To make this recipe vegan, use vegan Parmesan and vegan mozzarella cheese alternatives.
- If you prefer a stronger flavor, consider adding fresh herbs like basil or thyme to the vegetable mixture.
- You can serve these stuffed mushrooms as a main dish or a hearty appetizer.
Keywords: Portabella mushrooms, stuffed mushrooms, vegetarian recipe, baked mushrooms, vegetable stuffing, healthy appetizer, Italian vegetarian dish

