Slice the venison steak into ½ strips. Slice your onion and pepper into 1.2 strips.
Heat your griddle to medium/high heat. You can also use a cast iron skillet or large frying pan.
Use a little vegetable oil to grease the griddle and add your onions and peppers to the griddle. Cook for 10 minutes turning and flipping frequently.
When there are about 5 minutes left for cooking the veggies, add the sliced venison to the griddle and cook for about 2 minutes on each side.
Combine the veggies and steak, season them with salt and pepper, and push them to form them into the shape of your bread roll.
Place the swiss cheese or your favorite cheese on top of the steak, onions, and peppers. Then lift with your spatula and place onto your toasted bread roll. Serve and enjoy!