The Best Grilled Portobello Mushroom Burger

The Best Grilled Portobello Mushroom Burger is a deliciously satisfying option for lunch or dinner that even meat lovers will enjoy. This hearty burger features marinated portobello mushrooms grilled to perfection and topped with savory Swiss cheese, grilled onions, fresh tomatoes, spinach, and creamy avocado. Perfect for summer barbecues or a cozy family meal, this recipe showcases the unique flavors of mushrooms while providing a nutritious alternative to traditional burgers.

Why You’ll Love This Recipe

• Delicious Flavor – The combination of balsamic vinegar, rosemary, and steak seasoning elevates the taste of the mushrooms, making each bite flavorful.
• Quick and Easy – With a total prep and cook time of just 60 minutes, this recipe is perfect for busy weeknights.
• Healthier Option – Packed with nutrients and lower in calories compared to beef burgers, this grilled portobello mushroom burger is a guilt-free indulgence.
• Versatile Ingredients – You can easily swap out toppings like cheese or veggies according to your preferences or dietary needs.
• Great for Any Occasion – Whether it’s a casual weeknight dinner or a backyard BBQ, this burger fits right in.

Tools and Preparation

Before you get started on making The Best Grilled Portobello Mushroom Burger, gather your essential tools. Having the right equipment makes the cooking process smoother and more enjoyable.

Essential Tools and Equipment

• Grill or indoor grill pan
• Large bowl
• Whisk
• Basting brush
• Spatula

Importance of Each Tool

• Grill or indoor grill pan – Essential for achieving that smoky flavor and perfect grill marks on your mushrooms.
• Large bowl – Helps in easily marinating the mushrooms without making a mess.
• Whisk – Necessary for blending the marinade ingredients thoroughly.
• Basting brush – Perfect for applying marinade onto the mushrooms as they grill.

Ingredients

To make The Best Grilled Portobello Mushroom Burger, you will need:

For the Burger

• 4 portobello mushroom caps
• 2 tbsp balsamic vinegar
• 1 tbsp low sodium soy sauce
• 1 tbsp 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 the balsamic vinegar, low sodium soy sauce, olive oil, chopped rosemary, and Montreal steak seasoning until well combined.

Step 2: Marinate the Mushrooms

Place the portobello mushroom caps in the bowl with the marinade. Toss them gently to coat evenly. Let them sit at room temperature for 20 to 30 minutes, turning occasionally.

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 cooking spray on your grill pan.

Step 4: Grill the Mushrooms

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

Step 5: Add Cheese

During the final minute of grilling, top each mushroom cap with a slice of Swiss cheese so it melts beautifully.

Step 6: Grill Onions and Buns

While grilling mushrooms, add thick slices of red onion to the grill. Cook them for about 1 minute per side until slightly charred. Also toast your whole wheat buns on the grill until golden brown.

Step 7: Assemble Your Burger

To assemble your burgers, place baby spinach on each bun followed by grilled portobello mushrooms. Top with grilled onions, sliced tomatoes, and avocado slices. Close with the other half of the bun and enjoy!

How to Serve The Best Grilled Portobello Mushroom Burger

Serving The Best Grilled Portobello Mushroom Burger can elevate your meal experience. With a variety of toppings and sides, this burger can be tailored to suit any palate.

Classic Toppings

• Swiss Cheese: The melted Swiss adds a creamy texture that complements the savory mushrooms.
• Grilled Onions: Sweet and smoky, these onions bring extra flavor to each bite.
• Avocado Slices: Creamy avocado provides richness and balances the flavors perfectly.

Fresh Greens

• Baby Spinach: Adding a handful of baby spinach introduces freshness and crunch.
• Lettuce: Crisp lettuce leaves enhance the burger’s texture while offering a refreshing bite.

Sauces and Condiments

• Balsamic Glaze: Drizzling balsamic glaze on top gives a sweet tang that pairs beautifully with the grilled mushrooms.
• Mustard or Ketchup: Classic condiments can add zest and moisture to your burger.

How to Perfect The Best Grilled Portobello Mushroom Burger

Perfecting The Best Grilled Portobello Mushroom Burger involves attention to detail. Here are some tips to ensure your burger turns out delicious every time.

• Marinate Longer: For deeper flavor, consider marinating the mushrooms for up to an hour.
• Preheat Grill Properly: A well-heated grill ensures that you achieve nice grill marks and prevents sticking.
• Baste Frequently: Keep the mushrooms moist by brushing them with marinade during grilling.
• Experiment with Cheese: Try different cheeses like Gouda or cheddar for unique flavor profiles.
• Choose Quality Buns: Opt for whole grain or artisan buns for added texture and nutrition.
• Add Spices: Sprinkle additional spices like garlic powder or smoked paprika for an extra kick.

Best Side Dishes for The Best Grilled Portobello Mushroom Burger

Pairing side dishes with your grilled portobello mushroom burger enhances the meal. Here are some delightful options to consider.

1. Sweet Potato Fries: Crispy and sweet, these fries complement the earthy flavors of the burger.
2. Coleslaw: A tangy coleslaw adds crunch and acidity, balancing the richness of the burger.
3. Grilled Vegetables: Seasonal veggies like zucchini or bell peppers bring color and nutrition to your plate.
4. Quinoa Salad: A refreshing quinoa salad with herbs provides a nutritious side that’s full of flavor.
5. Corn on the Cob: Sweet corn grilled to perfection adds a summer vibe to your meal.
6. Potato Salad: Creamy potato salad is a classic choice that pairs well with grilled foods.

Common Mistakes to Avoid

When making The Best Grilled Portobello Mushroom Burger, it’s easy to make some common mistakes that can affect the flavor and texture. Here are a few to keep in mind.

• Skipping the Marinade: Failing to marinate the mushrooms can lead to bland burgers. Make sure to allow at least 20 minutes of marinating time for maximum flavor.

• Not Preheating the Grill: Cooking on a cold grill can result in uneven cooking. Always preheat your grill to medium heat before placing the mushrooms on it.

• Overcooking the Mushrooms: Grilling for too long can make portobello mushrooms tough and chewy. Aim for 5 to 7 minutes on each side, just until tender.

• Ignoring Toppings: A great burger needs great toppings! Don’t forget to add toppings like grilled onions, fresh tomatoes, and avocado for added flavor and nutrition.

• Using Regular Buns: Opting for regular buns instead of whole wheat or low-calorie options may not align with health goals. Choose healthier buns to complement your grilled mushroom burger.

Storage & Reheating Instructions

Refrigerator Storage

• Duration: Store leftovers in the refrigerator for up to 3 days.
• Containers: Use airtight containers to keep the burgers fresh and prevent them from absorbing odors.

Freezing The Best Grilled Portobello Mushroom Burger

• Duration: You can freeze the cooked burgers for up to 2 months.
• Containers: Wrap each burger tightly in plastic wrap and place them in a freezer-safe bag or container.

Reheating The Best Grilled Portobello Mushroom Burger

• Oven: Preheat the oven to 350°F (175°C). Place the burgers on a baking sheet and heat for about 10-15 minutes until warmed through.
• Microwave: Heat on a microwave-safe plate for about 1-2 minutes, checking every 30 seconds until hot.
• Stovetop: Warm in a skillet over medium heat for about 5 minutes on each side until heated through.

Frequently Asked Questions

What makes The Best Grilled Portobello Mushroom Burger so special?

The combination of marinated portobello mushrooms, melted Swiss cheese, and fresh toppings creates a deliciously satisfying meal that appeals even to meat lovers.

Can I customize my grilled portobello mushroom burger?

Absolutely! You can add different cheeses, switch up the toppings, or even try different marinades based on your taste preferences.

How do I know when my portobello mushrooms are done grilling?

The mushrooms should be tender when pierced with a fork but still hold their shape. This usually takes around 5-7 minutes per side over medium heat.

What sides pair well with The Best Grilled Portobello Mushroom Burger?

Consider serving your burger with a fresh salad, sweet potato fries, or grilled vegetables for a balanced meal that complements the flavors of the burger.

Final Thoughts

The Best Grilled Portobello Mushroom Burger is not only delicious but also versatile. You can easily customize it with various toppings and sauces according to your taste. This recipe is perfect for casual lunches or hearty dinners. Give it a try, and enjoy a flavorful meal that’s sure to impress everyone at your table!

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The Best Grilled Portobello Mushroom Burger

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• Author: Aileen
• Total Time: 1 hour
• Yield: Serves 4

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Description

The Best Grilled Portobello Mushroom Burger is a delectable, hearty alternative to traditional meat burgers that even the most avid carnivores will crave. This delightful dish features marinated portobello mushroom caps grilled until tender and juicy, layered with savory Swiss cheese, caramelized grilled onions, ripe tomatoes, fresh spinach, and creamy avocado. Ideal for summer cookouts or cozy family dinners, this burger not only showcases the rich flavors of mushrooms but also serves as a nutritious option without sacrificing taste. Get ready to impress your guests or enjoy a satisfying meal any day of the week with this easy-to-follow recipe.

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Ingredients

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• 4 portobello mushroom caps
• 2 tbsp balsamic vinegar
• 1 tbsp low sodium soy sauce
• 1 tbsp olive oil
• 1 tbsp chopped rosemary
• 1–1/2 tsp steak seasoning
• 4 thick slices red onion
• 4 oz reduced-fat Swiss cheese (sliced thin)
• 4 thin slices tomato
• 1/2 avocado (sliced thin)
• baby spinach
• 4 whole wheat low-calorie buns

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Instructions

1. In a large bowl, whisk together balsamic vinegar, soy sauce, olive oil, rosemary, and steak seasoning.
2. Add portobello caps to the marinade, tossing gently to coat. Let marinate for 20 to 30 minutes.
3. Preheat grill or grill pan over medium heat and lightly oil the grate.
4. Grill marinated mushrooms for 5 to 7 minutes per side; baste with leftover marinade while grilling.
5. In the last minute of grilling, top each mushroom cap with Swiss cheese until melted.
6. Grill onion slices for about 1 minute per side and toast buns until golden brown.
7. Assemble your burger with spinach on each bun followed by grilled mushrooms, onions, tomato slices, and avocado.

• Prep Time: 30 minutes
• Cook Time: 30 minutes
• Category: Main
• Method: Grilling
• Cuisine: American

Nutrition

• Serving Size: 1 serving
• Calories: 310
• Sugar: 3g
• Sodium: 450mg
• Fat: 15g
• Saturated Fat: 5g
• Unsaturated Fat: 9g
• Trans Fat: 0g
• Carbohydrates: 36g
• Fiber: 8g
• Protein: 12g
• Cholesterol: 20mg