INGREDIENTS
2 tbsp
olive oil, (divided)
1
medium onion (sliced into half rings)
2
garlic cloves (minced)
3
portobello mushroom caps, (about 20 oz. total, cleaned and sliced into thin strips)
1 cup
vegetable broth
1 tbsp
soy sauce
1 tbsp
vegan Worcestershire sauce
1/2 tsp
dried thyme
1/4 tsp
liquid smoke, (optional, but highly recommended)
1/4 tsp
black pepper
2
inch sandwich rolls or baguette sections (sliced open)
horseradish mustard