I did not miss the beef at all in this cheese “steak” sandwich! The mushrooms and onions had so much flavor, and you may want to add peppers to the mix as well. You could definitely use sliced cheese here which would give the sandwich a more traditional look, but the Laughing Cow wedges worked well.
1 t olive oil
1 onion, sliced
2 Portobello mushrooms, sliced
1 t flour
1 T balsamic vinegar
1 T soy sauce
2 wedges Laughing Cow Light cheese
2 whole wheat buns
Heat oil in a frying pan over medium heat. Add sliced onions, and cook for 5-10 minutes. Add mushrooms, and continue cooking until vegetables are soft and golden brown. Sprinkle flour over vegetables, and add vinegar and soy sauce and mix well. Simmer for 1 minute, and add salt and pepper to taste.
Divide mixture between 2 whole wheat buns which have been sliced and spread with cheese.