Baked portobello mushrooms make an elegant appetizer or side. Each mushroom is filled with a bright balsamic bruschetta and topped with fresh mozzarella, then broiled until bubbly. Simple, quick, and ready in about 30 minutes.
Baked Portobello Mushroom Recipe — Italian Style
Stuffed mushrooms are a classic, but this version swaps the usual breadcrumb filling for a vibrant balsamic bruschetta and creamy fresh mozzarella. The result is fresh, tangy, and satisfying. It’s also easy to make vegan by omitting the cheese or swapping in a plant-based alternative.
This recipe is ideal as an elegant starter or a single-portioned side—one mushroom per person is plenty. The balsamic and tomato mixture complements the meaty mushroom caps, and the broiled mozzarella gives a golden, bubbly finish.
Process: Baked Portobello Mushrooms with Bruschetta and Mozzarella
Start by cleaning the mushrooms. Use a dry paper towel to gently wipe away any dirt—avoid rinsing them, since mushrooms absorb water and will steam rather than roast if wet.
Remove the stems and scoop out the gills with a small metal spoon, keeping the caps intact when possible. Place the cleaned caps on a baking sheet, drizzle with a bit of olive oil, and season with kosher salt and black pepper.
Bake the mushrooms at 375°F on the middle rack for 10 minutes. After baking, pat the mushrooms dry with a paper towel to remove any liquid released during cooking.
Prepare the bruschetta: quarter one pint of cherry tomatoes, chop 1/2 cup red onion, and mince three cloves of garlic. Roughly chop about 1/4 cup fresh parsley.
Combine the tomatoes, onion, garlic, and parsley in a bowl. Add 2 tablespoons balsamic vinegar, 2 tablespoons olive oil, 1/4 teaspoon salt, and 1/8 teaspoon black pepper. Stir well to blend the flavors.
Spoon the bruschetta mixture into each mushroom cap. Top each stuffed mushroom with a slice of fresh mozzarella and a light drizzle of olive oil. Return the tray to the oven and bake for 5 minutes.
After the five minutes, move the oven rack to the highest position and switch the broiler to high. Broil the mushrooms for 2–3 minutes, watching closely, until the mozzarella is bubbly and lightly browned.
Remove the mushrooms, garnish with the remaining fresh parsley, and, if desired, finish with an extra drizzle of extra virgin olive oil and a splash more balsamic for brightness. Serve immediately.
Ingredients (serves 4)
- 4 large portobello mushrooms
- 4 slices fresh mozzarella
- 1 pint cherry tomatoes
- 1/2 cup red onion, chopped
- 1/4 cup fresh parsley, chopped
- 3 cloves garlic, minced
- 1/2 tsp kosher salt (divided)
- 1/4 tsp black pepper (divided)
- 2 Tbsp balsamic vinegar
- 1/4 cup olive oil (divided)
Instructions
- Heat oven to 375°F and position a rack in the middle.
- Clean mushrooms with a dry paper towel. Remove gills and stems and place caps on a baking sheet.
- Brush caps with half the olive oil and season with half the salt and pepper. Bake 10 minutes.
- While mushrooms bake, slice mozzarella into 1/4″ pieces. Quarter tomatoes, chop onion, mince garlic, and chop parsley.
- Mix tomatoes, onion, garlic, parsley, remaining salt and pepper, 2 Tbsp olive oil, and 2 Tbsp balsamic vinegar in a bowl.
- Remove mushrooms, pat dry, and fill each cap with the bruschetta. Top with a slice of mozzarella and a light drizzle of olive oil.
- Bake 5 minutes more, then move the rack to the top and broil on high for 2–3 minutes until cheese is bubbly—watch closely to avoid burning.
- Remove, garnish with parsley, and serve with extra balsamic and olive oil on the side if desired.
Nutrition (approx.)
Calories: 180 kcal | Carbohydrates: 14 g | Protein: 10 g | Fat: 11 g | Sodium: 350 mg
Enjoy these stuffed portobellos as an elegant starter or a flavorful side. They pair beautifully with hearty Italian mains or a crisp salad. If you try the recipe, feel free to share a photo using #sipandfeast.