Grilled Portabella Burger With Basil Mayonnaise

• 1/4 cup fresh basil, chopped
• 3 tablespoons vegan mayonnaise
• 1 teaspoon apple cider vinegar
• 4 portabella mushroom caps (about 1 pound)
• 2 teaspoons olive oil
• 1/8 teaspoon sea salt (or to taste)
• 1/8 teaspoon black pepper (or to taste)
• 4 mixed-grain hamburger buns
• 4 pieces roasted red peppers, drained (jarred water-packed)
• 4 slices red onions
• 4 leaves romaine lettuce

1. Heat grill or grill pan.
2. In a small bowl, combine basil, vegan mayonnaise, and vinegar; set aside.
3. Lightly coat both sides of mushroom caps with olive oil.
4. Season with salt and pepper, if desired.
5. Grill mushrooms over medium-high heat, until just soft to the touch, about 6 minutes per side.
6. To serve, split buns and toast on grill.
7. Spread a heaping teaspoon of the basil mixture on top and bottom halves of buns.
8. Layer each bottom half with one lettuce leaf, red pepper,.
9. mushroom, and onion slice; top with remaining half bun.
10. and serve.

fresh basil, vegan mayonnaise, apple cider vinegar, portabella mushroom caps, olive oil, salt, black pepper, mixedgrain hamburger buns, red peppers, red onions, romaine lettuce

Taken from www.food.com/recipe/grilled-portabella-burger-with-basil-mayonnaise-252347 (may not work)