Cut the potatoes into cubes, put in a skillet with the oil and onions.. Cover. Cook over medium heat for about 10 minutes. Flip the potatoes over once, if you pan is really hot maybe more. Top the potatoes with the cheese.
Push the potatoes over to one side of the pan. Cook the Breakfast Scramble Patty for about 6 - 7 minutes.
Put the lettuce on the bun. Top with the patty, then the potatoes. add the tomatoes. Cover with top bun.
Recipe by Recipes Food and Cooking at https://recipesfoodandcooking.com/2015/03/26/breakfast-scramble-sandwich/