In a medium bowl, whisk together the flour, baking powder, apple pie spice, and salt. Whisk in the milk, egg, vanilla extract, and oil, until incorporated.
Heat skillet over medium heat, and spray it with nonstick spray.
Using a 1/8-1/4 size measuring cup, pour batter onto skillet. Spread the batter out more if necessary, to about 4-inch diameters.
Reduce the heat to medium-low.
Cook the pancake 2 to 3 minutes, or until the bubbles begin popping on top of the pancake and it is golden brown on the bottom.
Gently but quickly flip over pancake. Cook an additional 2 to 3 minutes (with the temperature still on medium-low), until the other side is golden as well.
Repeat with the remaining pancake batter.