Name: Vegetarian French Dip Sandwiches
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Yield: 4
Ingredients: 1 yellow onion ($0.25); 3 portobello mushroom caps (about 1 lb.) ($5.39); 2 Tbsp butter ($0.22); Pinch of salt and pepper ($0.05); 1/4 tsp dried thyme ($0.03); 1/4 tsp dried oregano ($0.03); 2 cups vegetable broth* ($0.28); 1 Tbsp soy sauce ($0.09); 1/2 Tbsp brown sugar ($0.02); 1/8 tsp garlic powder ($0.02); 4 6-inch French or Ciabatta rolls ($2.66); 4 slices provolone ($1.40)