In a large bowl, mix together soy sauce, balsamic vinegar, olive oil and Melbourne Coffee Meat Rub.
Place the mushroom caps in the bowl and evenly coat. Once coated, cover with cling wrap and leave to marinate for 30 minutes at room temperature.
Grill mushrooms on medium heat on your BBQ, in a skillet or in your oven grill.
Grill for 5 - 7 minutes on each side or until tender, frequently basting with the reserved marinade.
Top the mushrooms with Swiss cheese during the last minute of cooking.
To finish, place baby spinach and Portobello mushrooms on the bun with sliced tomato, sliced onion and avocado.
1 comment
Healthier, cheaper, tastier, what’s not to love!
I am vegan, so made this without the cheese.
After marinating and pan frying the portobello mushrooms, I have never had such a meaty and delicious flavour. I’ll never return to those nasty pre-made ‘vegan meats’ with their questionable fillers again!