Grilled Balsamic Portabella Mushroom Caps

Grilled Balsamic Portabella Mushroom Caps Author: Alice Morrow Grilled Balsamic Portabella Mushroom Caps Ingredients 8 garlic cloves, unpeeled 1 c. extra-virgin olive oil Kosher salt, freshly ground black pepper ½ c. good quality balsamic vinegar 2 T. Dijon mustard 2…