Grilled Portabella Burger With Basil Mayonnaise

Ingredients

• 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

Directions

1. 1

   Heat grill or grill pan.

2. 2

   In a small bowl, combine basil, vegan mayonnaise, and vinegar; set aside.

3. 3

   Lightly coat both sides of mushroom caps with olive oil.

4. 4

   Season with salt and pepper, if desired.

5. 5

   Grill mushrooms over medium-high heat, until just soft to the touch, about 6 minutes per side.

6. 6

   To serve, split buns and toast on grill.

7. 7

   Spread a heaping teaspoon of the basil mixture on top and bottom halves of buns.

8. 8

   Layer each bottom half with one lettuce leaf, red pepper,.

9. 9

   mushroom, and onion slice; top with remaining half bun.

10. 10

    and serve.