2 cloves garlic, minced
1/8 teaspoon freshly ground black pepper
2 hamburger buns
Directions
Carefully remove stem from mushrooms and scrape gills from underside. Brush mushrooms with damp paper towel to remove any residual dirt.
Using a small paring knife, make shallow crosshatch cuts in the cap of mushrooms. Do not cut too deep. Place mushrooms, cap side up in a shallow dish.
To make the marinade, combine olive oil, balsamic vinegar, Worcestershire sauce, garlic, salt and pepper in a small bowl.
Spoon marinade over mushrooms. Allow mushrooms to marinate for 30 minutes to 1 hour, turning mushrooms half-way though.
Cook mushrooms in a panini press heated to 420° F for 6 to 8 minutes. Alternatively, cook mushrooms cap-side down in a skillet heated over medium-high heat or on a hot grill for 6 to 8 minutes; turn mushrooms and cook for an additional 6 to 8 minutes.