Preheat the oven to 350 degrees F.
In a medium mixing bowl, whisk together the eggs and oil. Add the sugar, matzo, potato starch, and salt and mix until blended. Stir in the apples.
Spray a 2 1/2-inch by 3 1/4-inch muffin tin with non-stick spray. Fill 3/4 full with the batter and dust with the cinnamon sugar. Bake until the tops spring back when pressed, about 15 to 18 minutes.
Cool on a rack and remove from the tin when they are at room temperature.
If you are concerned if the oils or other ingredients in these recipes are suitable for Passover, seek non-dairy substitutes or ingredients that are certified kosher for Passover.