Crispy Grilled Portobello Mushroom Burgers for Every Cookout
Crispy Grilled Portobello Mushroom Burgers are the perfect meatless alternative for every cookout. Tired of dry, tasteless veggie burgers? This recipe solves that problem with a juicy, flavorful patty that’s better than takeout. After making this many times, I’ve discovered the trick to a perfectly crispy exterior and tender interior. Keep reading for my best tips. If you love recipes like this, you’ll also enjoy Creamy Mashed Potatoes and Grilled Bang Bang Shrimp Skewers.
Why This Crispy Grilled Portobello Mushroom Burgers for Every Cookout Is Pure Comfort
- Crispy exterior with a tender, juicy interior
- Flavorful without needing a lot of toppings
- Healthier than traditional beef burgers
- Easy to make and customizable with your favorite toppings
What You'll Need for Crispy Grilled Portobello Mushroom Burgers for Every Cookout
Choosing the right ingredients makes a big difference, but this recipe is forgiving enough to work with what you have.
- 4 large portobello mushrooms
- 2 tbsp olive oil
- 4 burger buns
- 1 tsp dried oregano
- 1 tsp dried thyme
- 1 tsp garlic powder
- Salt and pepper, to taste
- 1/4 cup balsamic vinegar
- Optional: Lettuce
- Optional: Tomato
- Optional: Red onion
- Optional: Avocado
- Optional: Cheese (optional)
📝 Ingredient Notes
- Portobello mushrooms: Make sure they're large and have a flat cap for the best burger experience.
🛒 Tools & Equipment I Recommend
- Grill — Achieve perfect grill marks and crispy edges. → See on Amazon
- Grill brush — Ensure a clean grilling surface for better searing. → See on Amazon
How to Make Crispy Grilled Portobello Mushroom Burgers for Every Cookout
- Prepare the mushrooms: Remove the stems from the portobello mushrooms and scrape out the gills with a spoon. Brush both sides with olive oil and season with oregano, thyme, garlic powder, salt, and pepper.
- Grill the mushrooms: Preheat the grill to medium-high heat. Place the mushrooms on the grill, gill side down, and cook for 5-7 minutes. Flip and cook for another 5-7 minutes, until tender and crispy. Brush with balsamic vinegar in the last minute of cooking.
- Toast the buns: Lightly toast the burger buns on the grill for 1-2 minutes, until golden brown.
- Assemble the burgers: Place a mushroom on each bun, add your favorite toppings, and serve immediately.
Cook's Tips for Perfect Crispy Grilled Portobello Mushroom Burgers for Every Cookout
- Common mistake and fix: The #1 reason this recipe fails is overcooking the mushrooms, which makes them dry. To prevent this, keep an eye on them and remove them from the grill as soon as they're tender and crispy.
- Pro tip: For an extra boost of flavor, marinate the mushrooms in balsamic vinegar for 30 minutes before grilling.
- Pro tip: To make these burgers ahead of time, grill the mushrooms and store them in an airtight container in the fridge for up to 3 days. Reheat on the grill or in the oven before serving.
Storing & Reheating Crispy Grilled Portobello Mushroom Burgers for Every Cookout
Short-Term Storage
Store in an airtight container in the fridge. Store leftover burgers in an airtight container in the fridge for up to 3 days. Make-ahead tip: The mushrooms can be grilled up to 3 days ahead of time.
Freezing Crispy Grilled Portobello Mushroom Burgers for Every Cookout
Freezing is not recommended for this recipe.
How to Reheat Without Drying It Out
Oven: Reheat in the oven at 350°F (175°C) for 10-15 minutes. Microwave: Reheat in the microwave for 30-60 seconds, until warmed through.
Recipe Notes
- Chef tip: For a spicy kick, add a pinch of red pepper flakes to the seasoning mixture.
- Best substitution: If you don't have fresh herbs, you can use dried herbs instead. Use half the amount called for in the recipe.
- Make-ahead: The mushrooms can be marinated in balsamic vinegar up to 24 hours ahead of time.
- Scaling: This recipe can be easily doubled or tripled to serve a crowd.
- Troubleshooting: If your burgers are sticking to the grill, make sure your grill is hot enough and well-oiled before adding the mushrooms.
Want to level up this recipe?
Grill thermometer — Ensure perfect cooking temperature for the best results. → Check price on Amazon
Crispy Grilled Portobello Mushroom Burgers for Every Cookout
Ingredients
Main Ingredients
- 4 large portobello mushrooms
- 2 tbsp olive oil
- 4 burger buns
Seasonings
- 1 tsp dried oregano
- 1 tsp dried thyme
- 1 tsp garlic powder
- Salt and pepper, to taste
- 1/4 cup balsamic vinegar
Optional Toppings
- Lettuce
- Tomato
- Red onion
- Avocado
- Cheese (optional)
Instructions
- Prepare the mushrooms: Remove the stems from the portobello mushrooms and scrape out the gills with a spoon. Brush both sides with olive oil and season with oregano, thyme, garlic powder, salt, and pepper.
- Grill the mushrooms: Preheat the grill to medium-high heat. Place the mushrooms on the grill, gill side down, and cook for 5-7 minutes. Flip and cook for another 5-7 minutes, until tender and crispy. Brush with balsamic vinegar in the last minute of cooking.
- Toast the buns: Lightly toast the burger buns on the grill for 1-2 minutes, until golden brown.
- Assemble the burgers: Place a mushroom on each bun, add your favorite toppings, and serve immediately.
Notes
- Chef tip: For a spicy kick, add a pinch of red pepper flakes to the seasoning mixture.
- Best substitution: If you don't have fresh herbs, you can use dried herbs instead. Use half the amount called for in the recipe.
- Make-ahead: The mushrooms can be marinated in balsamic vinegar up to 24 hours ahead of time.
- Scaling: This recipe can be easily doubled or tripled to serve a crowd.
- Troubleshooting: If your burgers are sticking to the grill, make sure your grill is hot enough and well-oiled before adding the mushrooms.
Storage
- Fridge: Store leftover burgers in an airtight container in the fridge for up to 3 days.
- Freezer: Freezing is not recommended for this recipe.
- Oven reheat: Reheat in the oven at 350°F (175°C) for 10-15 minutes.
- Microwave reheat: Reheat in the microwave for 30-60 seconds, until warmed through.
- Make ahead: The mushrooms can be grilled up to 3 days ahead of time.
Nutrition Per Serving
- Calories: 270
- Protein: 12g
- Fat: 12g
- Carbs: 30g
- Fiber: 4g
- Sugar: 6g
- Sodium: 600mg
- Cholesterol: 0mg
- Sat. Fat: 2g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Crispy Grilled Portobello Mushroom Burgers for Every Cookout FAQs
Yes, you can grill the mushrooms up to 3 days ahead of time. Store them in an airtight container in the fridge and reheat before serving.
The #1 reason this recipe fails is overcooking the mushrooms, which makes them dry. To prevent this, keep an eye on them and remove them from the grill as soon as they're tender and crispy.
Yes, you can cook the mushrooms in the oven at 400°F (200°C) for 15-20 minutes, until tender and crispy.
You can use red wine vinegar or lemon juice as a substitute for balsamic vinegar.
Yes, these burgers are gluten-free as long as you use gluten-free buns and toppings.
A Warm Final Note
I can’t wait for you to try Crispy Grilled Portobello Mushroom Burgers for Every Cookout and see how effortlessly it comes together. When you make it, pop back here and leave a rating or share how it turned out — I love hearing from you!
