In a large bowl, place flour, baking powder, sugar, cinnamon, and salt.
Make a well in the center and pour in the milk, egg, butter, and vanilla. Mix until there are no visible lumps and the batter is smooth.
Cook the pancakes:
Heat a non-stick griddle or large pan over medium heat. I set my electric around 325F; this will vary by model. Once hot, grease, spray, or melt butter on the hot surface.
Immediately, pour ¼ cup of pancake batter onto the greased pan. Cook the pancakes for about 2 minutes, until the edges begin to look defined and bubbles form. Flip the pancakes over and cook for another minute or two on the other side. Remove from the pan onto a plate and cook the remaining pancakes.
Serve:
Serve the warm cinnamon pancakes topped with your favorite toppings and a drizzle of maple syrup or cinnamon syrup.
Notes
Use the right baking powder: Since pancake batter naturally has a mild, neutral flavor, it's important to use aluminum-free baking powder. The metallic flavor will ruin the taste, especially in fluffy pancake recipes that call for 2 or more teaspoons. Trust me on this one.