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6) Grilled portobello burgers with balsamic onions

Print Recipe
Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Servings: 4 servings
Ingredients Method

Ingredients
  

  • 4 large portobello caps stems removed
  • 3 tbsp olive oil
  • 2 tbsp balsamic vinegar
  • 1 tsp soy sauce
  • 1 tsp garlic powder
  • 2 large onions thinly sliced
  • 1 tbsp butter
  • 4 burger buns
  • Salt and pepper to taste
  • Optional: 4 slices provolone or cheddar lettuce, tomato

Method
 

  1. Toss mushrooms with 2 tbsp oil, balsamic, soy, garlic powder, salt, and pepper. Let sit 10 minutes.
  2. Heat grill to medium (about 375°F). Brush grates with remaining oil.
  3. Cook onions in a skillet with butter over medium heat for 12–15 minutes, stirring, until soft and slightly reduced.
  4. Grill mushrooms 4–5 minutes per side until tender. Add cheese in last minute if using.
  5. Toast buns 1 minute on grill. Assemble with mushrooms, balsamic onions, lettuce, and tomato.