Balsamic Marinated Portobello Burgers Recipe

Ingredients

• :
• 1/4 cup balsamic vinegar
• 1/4 cup olive oil
• 2 tablespoons juice from 1 lemon
• 1 tablespoon Dijon mustard
• 3 medium cloves garlic, minced (about 1 tablespoon)
• 1 teaspoon finely minced thyme leaves
• 1 teaspoon Kosher salt
• 4 portobello mushrooms, stems removed and scrubbed clean
• 4 hamburger buns
• 4 pieces of green or red leaf lettuce, washed and dried
• 1 roma tomato, sliced
• 1 red onion, thinly sliced