Slice Hoagies in half lengthwise. Turn broiler on. Place rolls cut side up on baking sheet and put under broiler until golden brown. (Be careful! It won't take long!)
In small fry pan, preheat oil to medium high heat. Cook onions and peppers 5 minutes or until crisp-tender (or to your liking).
Spread 1 tablespoon butter on each half of sliced rolls. Rub garlic clove onto buttered rolls.
Divide cooked vegetables between both sandwiches. Place on bottom half of rolls. Top with 5 slices beef and 1/4 cup grated cheese per sandwich.
Place back under broiler to melt the cheese (exclude the tops of the rolls).
Make Aux Jus according to packaged directions. Once cheese has completely melted, remove from broiler. Top with other hoagie half. Slice sandwich in half. Serve with prepared Aux Jus.