Vegetarian Mushroom Philly Cheese Steak Sandwiches
Prep Time: 10 min
Cook Time: 17 min
Ingredients
- ✓ 1 tablespoon butter, divided
- ✓ 1 tablespoon olive oil, divided
- ✓ 1 (8 ounce) package baby bella (cremini) mushrooms, sliced
- ✓ ½ teaspoon fresh thyme leaves
- ✓ salt and freshly ground black pepper to taste
- ✓ 1 tablespoon soy sauce
- ✓ 1 bell pepper, sliced into strips
- ✓ 1 onion, sliced
- ✓ 2 slices provolone cheese, cut in half
- ✓ 2 hoagie rolls, split lengthwise
- ✓ 2 teaspoons Dijon mustard, or more to taste