Heat a skillet to medium heat and add oil or butter. Beat 2 Ontario eggs with salt and pepper. Add the beaten eggs to the skillet. Immediately add 2 slices of bread into the egg mixture, flipping the bread slices so both sides are coated in the egg. Once the egg is cooked through, flip the entire thing over. Add cheese, meat, vegetables, or any other desired fillings to one side of the egg-coated bread, then close the sandwich. Enjoy!