Combine flour, sugar, baking powder, cinnamon, and salt. Whisk together.
Add egg, milk, vegetable oil, and vanilla. Whisk together until just a few lumps remain. Let batter rest for five minutes.
Heat 1 tablespoon of oil in skillet over medium heat until oil glistens. Pour 1/4 cup of the batter at a time, cooking until bubbles form and edges brown slightly, then flip to finish cooking.