INGREDIENTS
4
portobello mushroom caps
2 tbsps
balsamic vinegar
1 tbsp
soy sauce
1 tbsp
olive oil
1 tbsp
rosemary
1 1/2 tsps
steak seasoning like montreal steak grill mates
4 slices
onion
4 ozs
reduced fat swiss )
4 slices
tomato
1/2
avocado
4
low calorie buns
1 serving
baby spinach