Pan-Seared Portobello Mushroom Burgers with Caramelized Onions

A creative twist on traditional burgers, these portobello mushroom patties are seared to perfection and paired with sweet caramelized onions, all served on a toasted brioche bun. This American-style vegetarian burger is a game-changer for any meal.

🛒 Ingredients

• 4 caps Portobello mushrooms
• 1/2 cups all-purpose flour
• 4 brioche buns
• 2 tbsp unsalted butter
• 1 large onion
• 1/4 tsp garlic powder
• 1/2 tsp salt
• 1/4 tsp black pepper
• 2 tbsp mayonnaise
• 4 cups shredded lettuce
• 4 thick-cut bacon

👨‍🍳 Instructions

1. 1

   Step 1: Preheat your grill to medium-high heat. In a shallow dish, mix together the flour, garlic powder, salt, and black pepper.

2. 2

   Step 2: Dip each portobello mushroom cap into the flour mixture, coating both sides evenly.

3. 3

   Step 3: Add the butter to the grill or grill pan and let it melt. Add the mushrooms and sear for 3-4 minutes on each side.

4. 4

   Step 4: Meanwhile, caramelize the onions by cooking them in a pan over low heat for 30 minutes, stirring occasionally.

5. 5

   Step 5: Assemble the burgers by placing a cooked mushroom patty on each brioche bun, followed by a spoonful of caramelized onions and a few pieces of crispy bacon.

6. 6

   Step 6: Spread a layer of mayonnaise on the top bun and top with shredded lettuce.

7. 7

   Step 7: Place the burgers under the broiler for an additional 2-3 minutes to toast the buns.

8. 8

   Step 8: Serve immediately and enjoy!

💡 Pro Tips

To caramelize the onions, cook them slowly over low heat for 30 minutes, stirring occasionally. Avoid overcrowding the grill when cooking the mushrooms to prevent steaming instead of searing. Store leftover burgers in an airtight container in the refrigerator for up to 3 days.

📊 Nutrition per Serving