The Best Grilled Portobello Mushroom Burgers | Skinnytaste = 2 T balsamic 1 T soy sauce salt and pepper 1 T chopped rosemary (4
The Best Grilled Portobello Mushroom Burgers | Skinnytaste = 2 T balsamic 1 T soy sauce salt and pepper 1 T chopped rosemary (4 portabellos)
Source: HERE