Melt the butter in microwave for 30 seconds, set aside.
In a medium bowl, mix together flour, sugar, salt, and baking powder.
Stir milk and egg together.
Create a well in the center of the flour mixture.
Pour the butter, vanilla, and milk mixture into the well.

Use a wire whisk to stir everything together until just combined. It will be slightly thick and lumpy, but should be well incorporated.
Allow the batter to rest while heating a lightly oiled skillet or griddle to medium high heat.
Pour or scoop the batter onto the griddle or skillet using approximately 1/4 cup for each pancake.

Cook each side for 3-6 minutes, until lightly golden brown.
Serve warm, with desired topping such as maple syrup, fresh berries,banana slices, ice cream or whipped cream.