Step 1: Wipe any dirt from top of mushroom with a dry cloth and scrape out the stem and gills from inside the mushroom with a spoon.
Step 2: Mix together the red wine vinegar, 2 tablespoons of the pesto and the minced garlic, pour half of it into a bowl, place the mushroom gill side up into the bowl and pour the remaining mayo mixture in the mushroom.
Step 3: Let the mushroom marinate for an hour, swishing it around a few times.
Step 4: Remove the mushroom from the marinade and place cap side down onto a preheated grill over direct heat and cook for 3 to 4 minutes; season with salt and pepper.
Step 5: Turn the mushroom over and cook for another 3 to 4 minutes or until it starts to soften.
Step 6: When the mushroom is cooked to your liking, place it on a warmed hamburger bun and top with remaining ingredients.
Step 7: Enjoy!
This page is built for your convenience in the kitchen.
If you want helpful tools, tips and recipes from our community of real cooks, please consider signing up.
Oh... And one more thing... We also have some pretty wild forums.