Gruyere, Mushroom, & Caramelized Onion Bites By Lali Lu April 26, 2019 Gruyere Mushroom & Caramelized Onion Bites with sautéed crimini mushrooms, balsamic caramelized onions, and applewood smoked gruyere cheese. #appetizers #christmas #mushrooms | Littlespicejar.com