The Best Grilled Portobello Mushroom Burger

I set out to make The Best Grilled Portobello Mushroom Burger that even a meat lover would love. This hearty burger features marinated portobello mushrooms, which are grilled to perfection and topped with melted Swiss cheese, grilled red onion, fresh tomatoes, spinach, and creamy avocado. It’s a flavorful option perfect for lunch or dinner and suitable for various occasions like BBQs, picnics, or casual family meals.

Why You’ll Love This Recipe

• Flavorful: The marinade of balsamic vinegar and rosemary infuses the mushrooms with a delicious depth of flavor.
• Healthy Option: Packed with nutrients from vegetables and whole grains, this burger is a healthier alternative to traditional meat burgers.
• Quick Preparation: With just 30 minutes of prep time, you can serve these mouthwatering burgers in under an hour.
• Versatile Toppings: Customize your burger by adding your favorite toppings or sauces for a personal touch.
• Satisfying Texture: The grilled portobello mushrooms provide a meaty texture that will satisfy any hunger.

Tools and Preparation

To create The Best Grilled Portobello Mushroom Burger, you’ll need some essential tools for grilling and preparation.

Essential Tools and Equipment

• Grill or indoor grill pan
• Large mixing bowl
• Whisk
• Basting brush
• Knife
• Cutting board

Importance of Each Tool

• Grill or indoor grill pan: Provides the perfect heat source to achieve those beautiful grill marks and smoky flavor.
• Basting brush: Ensures the mushrooms stay moist by applying marinade as they cook.
• Knife: Essential for slicing vegetables and assembling your burger ingredients quickly.

Ingredients

Here’s what you’ll need to make The Best Grilled Portobello Mushroom 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)

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, chopped rosemary, and Montreal steak seasoning until well combined.

Step 2: Marinate the Mushrooms

• Place the mushroom caps in the marinade.
• Toss gently using a spoon to ensure even coating.
• Let them stand at room temperature for 20 to 30 minutes while turning occasionally.

Step 3: Preheat the Grill

Heat your grill or indoor grill pan over medium heat. When hot, brush the grate lightly with oil or spray with cooking spray.

Step 4: Grill the Mushrooms

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

Step 5: Add Cheese

During the last minute of cooking, top each mushroom with sliced Swiss cheese so it melts perfectly.

Step 6: Grill Onions and Buns

While mushrooms are cooking:
Grill red onion slices for about one minute on each side until caramelized.
Toast whole wheat buns on the grill until golden brown.

Step 7: Assemble Your Burgers

To finish:
Place baby spinach on each bun followed by the grilled portobello mushroom.
Top with grilled onions, sliced tomato, and avocado.

Enjoy your delicious creation!

How to Serve The Best Grilled Portobello Mushroom Burger

Serving your grilled portobello mushroom burger can elevate the meal experience. Here are some delightful serving suggestions that complement this tasty dish.

With Fresh Greens

• Mixed Green Salad: A light salad with a variety of greens adds freshness and crunch.
• Coleslaw: Creamy or vinegar-based coleslaw offers a tangy contrast to the savory burger.

With Tasty Condiments

• Garlic Aioli: Spread this creamy garlic sauce on the bun for an extra flavor boost.
• Spicy Mustard: For those who love a kick, spicy mustard pairs well with the earthy flavors of the mushroom.

On a Platter

• Finger Foods: Serve sliders alongside your burger for guests who enjoy smaller bites.
• Dips and Chips: Offer tortilla chips with salsa or guacamole as a crunchy side option.

How to Perfect The Best Grilled Portobello Mushroom Burger

Perfecting your grilled portobello mushroom burger involves careful attention to detail. Follow these tips for an unbeatable flavor.

• Marinate Longer: Allow the mushrooms to marinate for at least an hour for deeper flavor infusion.
• Use High Heat: Grill at medium-high heat to achieve a nice char without overcooking the mushrooms.
• Choose Fresh Ingredients: Opt for fresh vegetables and quality cheese to enhance taste and nutrition.
• Experiment with Toppings: Add unique toppings like roasted red peppers or jalapeños for extra zest.

Best Side Dishes for The Best Grilled Portobello Mushroom Burger

Pairing side dishes with your grilled portobello mushroom burger can create a well-rounded meal. Here are some excellent options.

1. Sweet Potato Fries: Crispy and slightly sweet, these fries are a perfect contrast to the savory burger.
2. Quinoa Salad: A protein-packed salad that adds texture and nutrients alongside your meal.
3. Grilled Vegetables: Seasonal veggies like zucchini and bell peppers bring out the smoky flavors of the burger.
4. Corn on the Cob: Grilled or boiled, corn adds a delightful sweetness that complements the dish.
5. Potato Salad: A classic side, whether creamy or vinaigrette-based, it brings comfort to any barbecue setting.
6. Baked Beans: Hearty and flavorful, they provide a satisfying accompaniment to your mushroom burger.

Common Mistakes to Avoid

When making The Best Grilled Portobello Mushroom Burger, it’s easy to overlook a few key details. Here are some common mistakes to avoid for the best results.

• Skipping the Marinade: Not marinating the mushrooms can lead to bland flavor. Always allow them to soak in the marinade for at least 20 minutes for full flavor absorption.
• Overcooking the Mushrooms: Cooking the mushrooms too long can make them tough. Grill them just until tender, about 5 to 7 minutes per side.
• Using Low-Quality Cheese: Cheap cheese may not melt properly and can affect flavor. Opt for high-quality Swiss cheese for a creamy finish.
• Neglecting Fresh Ingredients: Using stale or old veggies will detract from your burger’s taste. Choose fresh spinach, ripe tomatoes, and firm avocados for the best texture and flavor.
• Forgetting Bun Preparation: Toasting your buns enhances their taste and prevents sogginess. Don’t skip this step; it adds a delightful crunch!
• Ignoring Serving Suggestions: Failing to add complementary toppings can make your burger less enticing. Consider adding spicy mustard or pickles for an extra kick.

Storage & Reheating Instructions

Refrigerator Storage

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

Freezing The Best Grilled Portobello Mushroom Burger

• Wrap each burger tightly in plastic wrap or foil before placing it in a freezer-safe bag.
• Frozen burgers will stay good for about 3 months.

Reheating The Best Grilled Portobello Mushroom Burger

• Oven: Preheat your oven to 350°F (175°C) and heat for about 10-15 minutes until warmed through.
• Microwave: Place on a microwave-safe plate and cover with a damp paper towel. Heat for 1-2 minutes until hot.
• Stovetop: Heat a skillet over medium heat. Add the burger and cook for approximately 5 minutes on each side until heated through.

Frequently Asked Questions

Many readers have questions about The Best Grilled Portobello Mushroom Burger. Here are answers to some common queries.

How do I choose the right portobello mushrooms?

Choose mushrooms that are firm, plump, and have a smooth cap. Avoid any that appear shriveled or bruised for the best flavor.

Can I grill portobello mushrooms without marinating?

While you can grill them plain, marinating enhances their flavor significantly. It’s highly recommended!

What toppings go well with The Best Grilled Portobello Mushroom Burger?

Consider adding toppings like avocado, grilled onions, fresh spinach, or even a spicy aioli for extra flavor.

Is this recipe suitable for vegans?

You can easily adjust this recipe by omitting the cheese or using vegan cheese alternatives, making it suitable for vegans.

Can I use other types of mushrooms?

You can experiment with different mushroom varieties like shiitake or cremini, but portobellos provide the best texture and flavor for burgers.

Final Thoughts

The Best Grilled Portobello Mushroom Burger is not only delicious but also versatile, appealing to both vegetarians and meat lovers alike. This recipe offers plenty of room for customization; feel free to add your favorite toppings or herbs. Give it a try, and enjoy a hearty burger experience that satisfies every craving!