- ½ cup mayonnaise
- 1 clove garlic, minced
- 2 tablespoons chopped fresh basil
- 2 tablespoons olive oil
- 1 tablespoon balsamic vinegar
- 4 large portobello mushrooms, stems removed
- Kosher salt and freshly ground black pepper
- Ciabatta bread or pita pockets
- Well-washed and tom spinach leaves for topping
- Mix together the mayonnaise, garlic, and basil in a small bowl. Set aside to let the flavors develop.
- In another small bowl, whisk together the oil and vinegar and brush over the tops of the mushrooms thoroughly. Season with salt and pepper.
- Light a charcoal fire or preheat your gas grill on high. Oil the grill’s cooking surface. Let the coals bum down to a medium-hot fire or adjust the gas grill burners to medium.
- Cook the mushrooms until tender all the way through. 8 to 10 minutes per side.
- Serve on toasted ciabatta bread brushed with olive oil or in warm pita pockets. Top with a dollop of the basil mayonnaise and a handful of tom spinach leaves.