Add your dry ingredients into a large bowl. Including the flour, sugar, baking powder, and salt. Stir the dry ingredients until they are fully combined. 

Make a well in the center of the flour mixture and gently pour in your milk, melted butter, vanilla extract, and egg. 

Stir the mixture up until everything is fully incorporated. There may be some air bubbles in the mixture, but it should be fairly smooth. 

Warm up a cast iron skillet over medium heat. Spread a stick of butter into the pan for added flavor, and to prevent sticking. 

Ladle in about ¼ cup of the pancake mix into the skillet. If making more than one at a time, leave at least 2 inches between each pancake. The mixture will spread out as it cooks. 

Once you begin to see bubbles in the pancake mixture (after about 1-2 minutes), it is time to flip. Flip the pancake and cook on the other side for 1-2 minutes. 

ONLY FLIP THE PANCAKES ONE TIME!

Once the pancakes are done, remove them from the skillet and repeat the process until all of the flapjacks are made. 

Serve with butter and syrup, and enjoy!