INGREDIENTS
1 lb
Ground beef
1
Garlic clove
1/2
Green bell pepper
1/2 cup
Portobello mushrooms
1
Yellow onion, small
2 tbsp
Worcestershire sauce
1/2 tsp
Pepper
1 tsp
Salt
1 tbsp
Olive oil
12
slices Sourdough bread
6 tbsp
Butter
12
slices Provolone cheese