Created by AustinVegLiving on December 20, 2011
Step 1: Heat grill or grill pan.
Step 2: In a small bowl, combine basil, vegan mayonnaise, and vinegar; set aside.
Step 3: Lightly coat both sides of mushroom caps with olive oil and season with salt and pepper, if desired.
Step 4: Grill mushrooms over medium-high heat, until just soft to the touch, about 6 minutes per side.
Step 5: To serve, split buns and toast on grill then spread a heaping teaspoon of the basil mixture on top and bottom halves of buns.