The Best Grilled Portobello Mushroom Burger

The Best Grilled Portobello Mushroom Burger is a delicious alternative to traditional beef burgers that everyone will enjoy. This recipe combines marinated portobello mushrooms grilled to perfection and topped with melted Swiss cheese, fresh vegetables, and creamy avocado. Perfect for summer barbecues or a quick weeknight dinner, this burger is both satisfying and packed with flavor. You won’t miss the meat with this incredible dish.

Why You’ll Love This Recipe

• Flavorful and Savory: The marination process infuses the mushrooms with a rich taste that rivals any meat burger.
• Healthy Option: Low in calories and high in protein, this burger caters to health-conscious eaters without compromising on taste.
• Quick Preparation: With just 30 minutes of prep time, you can have a delicious meal ready in no time.
• Versatile Ingredients: Customize your toppings with your favorite veggies or sauces for a unique twist every time.
• Ideal for Any Occasion: Whether it’s a family dinner or a backyard BBQ, this burger fits right in.

Tools and Preparation

Preparing the Best Grilled Portobello Mushroom Burger requires some essential tools that make the cooking process easier and more enjoyable.

Essential Tools and Equipment

• Grill or indoor grill pan
• Mixing bowl
• Whisk
• Tongs
• Basting brush

Importance of Each Tool

• Grill or indoor grill pan: Essential for achieving that perfect char on your portobello mushrooms.
• Mixing bowl: Provides ample space for marinating the mushrooms evenly.
• Whisk: Helps to combine the marinade ingredients smoothly for maximum flavor infusion.

Ingredients

I set out to make a great tasting grilled portobello mushroom burger that even a meat lover would love. The mushrooms are marinated then grilled and topped with melted Swiss Cheese, grilled red onion, tomatoes, spinach, and avocado – yum!!

For the Burger

• 4 portobello mushroom caps
• 2 tbsp balsamic vinegar
• 1 tbsp low sodium soy sauce
• 1 tablespoon olive oil
• 1 tbsp chopped rosemary
• 1-1/2 tsp steak seasoning like Montreal Steak Grill Mates
• 4 thick slices red onion
• 4 oz reduced fat Swiss (sliced thin)
• 4 thin slices tomato
• 1/2 avocado (sliced thin)
• baby spinach
• 4 whole wheat low calorie buns (I used Martin)

For Garnish

• 2 tablespoons fresh parsley, finely chopped

How to Make The Best Grilled Portobello Mushroom Burger

Step 1: Prepare the Marinade

In a large bowl, whisk together balsamic vinegar, soy sauce, olive oil, rosemary, and Montreal steak seasoning until well combined.

Step 2: Marinate the Mushrooms

Place the portobello mushroom caps into the marinade. Toss them gently to ensure they are evenly coated. Allow them to sit at room temperature for 20 to 30 minutes, turning occasionally for thorough absorption.

Step 3: Preheat the Grill

Heat your grill or indoor grill pan over medium heat. Once hot, brush the grate lightly with oil or use non-stick spray on your grill pan.

Step 4: Grill the Mushrooms

Place the marinated mushrooms on the grill. Reserve some marinade for basting. Grill each side for about 5 to 7 minutes until tender while brushing frequently with the reserved marinade.

Step 5: Add Cheese

During the last minute of grilling, top each mushroom cap with Swiss cheese to melt perfectly.

Step 6: Grill Onions and Buns

While grilling the mushrooms, add sliced onions to the grill. Cook them for about 1 minute on each side until slightly charred. Toast your buns until golden brown.

Step 7: Assemble Your Burger

To assemble, place baby spinach on each bun followed by the grilled portobello mushroom caps. Top them off with grilled onions, sliced tomatoes, and avocado slices before closing up your delicious creation.

Enjoy your homemade The Best Grilled Portobello Mushroom Burger!

How to Serve The Best Grilled Portobello Mushroom Burger

Serving a delicious grilled portobello mushroom burger is all about enhancing its flavors and presentation. Here are some creative ways to serve this tasty dish that will impress both vegetarians and meat lovers alike.

Classic Presentation

• Serve the burger on a whole wheat bun with fresh baby spinach for a nutritious touch.
• Add a side of sweet potato fries for a delightful crunch.

Gourmet Twist

• Top with a smear of garlic aioli for an extra layer of flavor.
• Pair with a side salad drizzled with balsamic vinaigrette to balance the meal.

Family-Friendly Style

• Create a slider version by using smaller buns, perfect for kids’ appetites.
• Set up a DIY toppings bar where everyone can customize their burgers with different veggies and sauces.

Picnic Ready

• Wrap the burgers in parchment paper for easy transport.
• Include fresh fruit skewers or veggie sticks as refreshing sides.

How to Perfect The Best Grilled Portobello Mushroom Burger

Perfecting your grilled portobello mushroom burger requires attention to detail and some handy tips. Here are some insights to elevate your burger game.

• Marinate Well: Allow the mushrooms to soak in the marinade for at least 30 minutes. This enhances their flavor and tenderness.
• Preheat the Grill: Ensure your grill is hot before placing the mushrooms on it. A hot grill gives you those perfect grill marks and seals in moisture.
• Baste Regularly: Use the reserved marinade to baste the mushrooms while they cook. This keeps them juicy and flavorful.
• Watch Cooking Time: Grill mushrooms just until tender, about 5-7 minutes per side, to avoid overcooking them.
• Experiment with Cheese: While Swiss is delicious, try different cheeses like feta or gouda for unique flavor combinations.
• Add Fresh Herbs: Sprinkle fresh herbs like basil or parsley on top just before serving for an aromatic finish.

Best Side Dishes for The Best Grilled Portobello Mushroom Burger

Pairing your grilled portobello mushroom burger with the right side dishes can take your meal from good to great. Here are some excellent options that complement this tasty burger perfectly.

1. Sweet Potato Fries: Crispy and slightly sweet, these fries offer a healthy alternative to regular fries.
2. Coleslaw: A tangy slaw adds crunch and balances the richness of the burger. Try using a vinegar-based dressing for freshness.
3. Quinoa Salad: A light quinoa salad with cherry tomatoes, cucumber, and lemon dressing provides protein and nutrients.
4. Grilled Vegetables: Seasonal veggies like zucchini and bell peppers enhance the meal’s colors and flavors while adding fiber.
5. Corn on the Cob: Grilled corn brushed with lime butter offers a burst of sweetness that pairs well with savory burgers.
6. Chickpea Salad: A protein-packed salad made with chickpeas, red onion, and parsley brings earthiness to your plate.
7. Potato Wedges: Seasoned potato wedges baked until crispy make for a satisfying crunch alongside your burger.
8. Mixed Green Salad: A simple mixed green salad dressed lightly is refreshing and helps cleanse the palate between bites.

Common Mistakes to Avoid

When making The Best Grilled Portobello Mushroom Burger, it’s easy to make some common mistakes. Here are a few to watch out for:

• Skipping the marinade: Marinating the mushrooms is essential for flavor. Don’t rush this step; allow them to soak up the delicious balsamic and soy sauce mixture.
• Overcooking the mushrooms: Mushrooms can become tough if grilled for too long. Grill them just until they are tender, usually 5 to 7 minutes per side.
• Neglecting the toppings: Toppings like cheese, onions, and avocado enhance your burger’s taste. Make sure to grill the onions and use fresh ingredients for the best results.
• Using regular buns: Opt for whole wheat or low-calorie buns as they complement the mushroom’s earthy flavors while keeping the meal lighter.
• Not checking seasoning: Different brands of steak seasoning can vary in saltiness. Taste your marinade before adding it to the mushrooms, adjusting as needed.

Storage & Reheating Instructions

Refrigerator Storage

• Store leftovers in an airtight container.
• They will last for up to 3 days in the refrigerator.

Freezing The Best Grilled Portobello Mushroom Burger

• Place the cooled burgers in freezer-safe containers or bags.
• They can be frozen for up to 3 months for best quality.

Reheating The Best Grilled Portobello Mushroom Burger

• Oven: Preheat your oven to 350°F (175°C). Place burgers on a baking sheet, cover with foil, and heat for about 10-15 minutes until warm.
• Microwave: Use a microwave-safe plate and cover with a damp paper towel. Heat in short bursts of 30 seconds until warmed through.
• Stovetop: Heat a skillet over medium heat. Add a little oil and cook each side of the burger for about 2-3 minutes until hot.

Frequently Asked Questions

What makes The Best Grilled Portobello Mushroom Burger so special?

The combination of marinated, grilled portobello mushrooms with melted Swiss cheese creates a rich and satisfying flavor that rivals any meat burger.

Can I customize The Best Grilled Portobello Mushroom Burger?

Absolutely! You can add different toppings like sautéed peppers, jalapeños, or even switch out the cheese based on your preferences.

Is this recipe suitable for vegans?

To make it vegan, simply omit the Swiss cheese or substitute it with dairy-free cheese alternatives.

How do I know when my mushrooms are done grilling?

Mushrooms are done grilling when they are tender and juicy, typically after about 5 to 7 minutes per side on medium heat.

Can I prepare these burgers ahead of time?

Yes! You can marinate the mushrooms and grill them ahead of time, then store them in the fridge until you’re ready to serve.

Final Thoughts

The Best Grilled Portobello Mushroom Burger is not just a great vegetarian option; it’s a delicious meal that everyone will enjoy. With its rich flavors and customizable toppings, this burger is perfect for any barbecue or weeknight dinner. Try experimenting with different ingredients to make it your own!