The onions shrink to about half their size when the slowly cook down, and as they turn golden in color they turn sweet and delicious. They are great over burgers too, I make them with a lot less oil than he does with great results.
Ingredients:
- 2 teaspoons olive oil
- 1 large white onion, sliced into rings
- salt and black pepper, to taste
- 12 oz leftover garlic lovers roast beef, sliced thin
- 8 oz whole wheat Italian or French bread, cut into 4 pieces
- 4 oz reduced-fat Swiss Cheese or provolone
Directions:
Heat a 10-inch skillet over medium-low heat. Stir in the oil and onions, season with salt and pepper and cook until slightly brown, turning occasionally about 15 to 17 minutes.
Slice the bread open, place 3 oz of cooked roast beef on each piece and top with 1/4 of the caramelized onions. Top with cheese and place in the broiler for 1 to 2 minutes to melt the cheese, careful not to burn it.
source
http://www.skinnytaste.com