1 cup mashed potatoes
1/2 cup flour
1/2 teaspoon baking powder
1 egg
salt and pepper to taste

Heat a good nonstick pan or griddle while you mix the ingredients. Brush it with a little olive oil. Add the flour, baking powder, lightly beaten egg and salt and pepper to the mashed potato. The mixture should not be too runny, but should spread when you spoon it into the pan.
Scoop using a 1/4 cup measure if you have one, for a nice sized pancake. Cook over medium heat until the cake rises and starts making firm bubble pockets around the edges. This will be about two to three minutes at most. Turn it over and cook onto the other side for about two minutes, until nicely browned.