Slice ducks breasts as thinly as possible. If possible, place in the freezer for an hour or so to firm up meat before slicing. Season liberally with salt and pepper.

Heat olive oil in a large heavy skillet or griddle over medium-high heat. Add onions, pepper and garlic. Cook until onions are lightly browned. Add mushrooms and sauté with onions and peppers until soft.

Move vegetables over to one side of the skillet and add duck breast. Cook meat until lightly brown, but not overcooked. Season with a dash or two of Tabasco.

Mound meat into 4 rectangular piles, about the size of the Italian rolls. Top with equal portions of the vegetable mixture. Top with 2 slices of cheese for each mound until cheese melts.

Using two spatulas, scoop up each portion of meat and vegetables and place in Italian rolls.