Indulge in the rich, earthy flavors of portobello mushrooms with this delightful recipe. These mushrooms are grilled to perfection and stuffed with a vibrant pesto sauce, then topped with melted parmesan cheese. It's a simple yet elegant dish that can be served as an appetizer or a main course.
While most of the ingredients for this recipe are common, you might need to purchase portobello mushrooms and pesto sauce if they are not already in your pantry. Portobello mushrooms are large, meaty mushrooms that can be found in the produce section. Pesto sauce is a flavorful blend of basil, garlic, pine nuts, parmesan cheese, and olive oil, typically located in the condiment aisle.

Ingredients for Pesto Stuffed Grilled Portobellos
Portobello mushrooms: Large, meaty mushrooms that serve as the base for this dish.
Pesto sauce: A flavorful blend of basil, garlic, pine nuts, parmesan cheese, and olive oil.
Parmesan cheese: A hard, granular cheese that adds a salty, nutty flavor.
Olive oil: Used to brush the mushrooms, adding moisture and flavor.
Salt: Enhances the overall flavor of the dish.
Black pepper: Adds a hint of spice and depth to the flavor.
Technique Tip for This Recipe
When grilling portobello mushrooms, make sure to brush them with olive oil to prevent sticking and to enhance their flavor. Additionally, grilling the mushrooms gill side down first helps to sear and lock in their juices, ensuring they remain tender and juicy.
Suggested Side Dishes
Alternative Ingredients
portobello mushrooms - Substitute with large cremini mushrooms: They have a similar texture and flavor profile, making them a good alternative for grilling and stuffing.
pesto sauce - Substitute with basil chimichurri: This sauce has a similar herbaceous flavor and can be used as a vibrant, fresh alternative.
grated parmesan cheese - Substitute with grated pecorino romano: This cheese has a similar salty and nutty flavor, making it a suitable replacement.
olive oil - Substitute with avocado oil: Avocado oil has a high smoke point and a mild flavor, making it a good alternative for grilling.
salt - Substitute with sea salt: Sea salt can provide a similar level of seasoning with a slightly different mineral taste.
black pepper - Substitute with white pepper: White pepper offers a similar spiciness but with a slightly different flavor profile, which can add a unique twist to the dish.
Other Alternative Recipes Similar to This Dish
How to Store or Freeze This Dish
- Allow the portobello mushrooms to cool completely before storing. This helps prevent condensation, which can lead to sogginess.
- Place the cooled mushrooms in an airtight container. If stacking, separate layers with parchment paper to avoid sticking.
- Store the container in the refrigerator. The pesto stuffed grilled portobellos will stay fresh for up to 3 days.
- For freezing, wrap each mushroom individually in plastic wrap or aluminum foil. This helps to maintain their shape and prevent freezer burn.
- Place the wrapped mushrooms in a freezer-safe bag or container. Label with the date for easy tracking.
- Freeze for up to 2 months. To reheat, thaw in the refrigerator overnight.
- Reheat in the oven at 350°F (175°C) for about 10-15 minutes, or until heated through. Avoid microwaving as it can make the mushrooms rubbery.
- Enjoy your pesto stuffed grilled portobellos as a quick and delicious meal anytime!
How to Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the pesto stuffed grilled portobellos on a baking sheet lined with parchment paper. Cover them loosely with aluminum foil to prevent drying out. Bake for about 10-15 minutes, or until heated through.
For a quicker method, use a microwave. Place the mushrooms on a microwave-safe plate. Cover them with a microwave-safe lid or another plate to retain moisture. Heat on medium power for 1-2 minutes, checking halfway through to ensure they are warming evenly.
If you prefer a stovetop method, heat a non-stick skillet over medium heat. Add a small amount of olive oil to the pan. Place the portobellos in the skillet, cover with a lid, and cook for about 5-7 minutes, flipping halfway through to ensure even reheating.
For an air fryer, preheat it to 350°F (175°C). Place the pesto stuffed portobellos in the basket, ensuring they are not overcrowded. Heat for about 5-7 minutes, checking halfway through to ensure they are warming evenly.
If you have a toaster oven, preheat it to 350°F (175°C). Place the mushrooms on a toaster oven tray and cover them loosely with aluminum foil. Heat for about 10-12 minutes, or until warmed through.
Best Tools for This Recipe
Grill: Used to cook the portobello mushrooms to achieve a smoky flavor and tender texture.
Brush: Used to apply olive oil evenly on the portobello mushrooms.
Tongs: Essential for flipping the mushrooms on the grill without damaging them.
Spoon: Used to fill the mushrooms with pesto sauce.
Grater: Used to grate the parmesan cheese if it's not pre-grated.
Measuring cups: Used to measure out the pesto sauce and grated parmesan cheese.
Measuring spoons: Used to measure the olive oil and seasonings.
Cutting board: Provides a surface to prepare the mushrooms and other ingredients.
Knife: Used to remove the stems from the portobello mushrooms.
Serving platter: Used to present the finished grilled portobello mushrooms.
How to Save Time on This Recipe
Pre-make the pesto: Prepare the pesto sauce in advance and store it in the fridge. This saves time when you're ready to cook.
Preheat the grill: Start preheating your grill while you prep the mushrooms to cut down on waiting time.
Prep mushrooms ahead: Clean and remove the stems from the portobello mushrooms earlier in the day.
Use pre-grated cheese: Buy pre-grated parmesan cheese to avoid the extra step of grating it yourself.
Batch cooking: Grill extra mushrooms and store them for quick meals throughout the week.

Pesto Stuffed Grilled Portobellos
Ingredients
Main Ingredients
- 4 Portobello mushrooms stems removed
- ½ cup Pesto sauce
- ¼ cup Grated Parmesan cheese
- 1 tablespoon Olive oil
- 1 pinch Salt to taste
- 1 pinch Black pepper to taste
Instructions
- Preheat your grill to medium-high heat.
- Brush the portobello mushrooms with olive oil and season with salt and pepper.
- Grill the mushrooms, gill side down, for about 5 minutes.
- Flip the mushrooms and fill each with a generous spoonful of pesto sauce.
- Sprinkle grated Parmesan cheese on top of the pesto.
- Continue grilling for another 5-7 minutes, until the mushrooms are tender and the cheese is melted.
- Remove from grill and serve hot.
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Recipe
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