In large mixing bowl, whisk together flour, baking powder, sugar, and salt.
In liquid measuring cup, add milk, egg, and sour cream and stir until combined.
Add the milk mixture into your flour mixture and whisk together until batter is smooth.
Pour melted butter around the outside of the batter and gently whisk until combined.
Heat a lightly buttered griddle or frying pan over medium-high heat. Pour the batter onto the griddle, using approximately 1/8 cup for each pancake. Once small bubbles cover the entire pancake, flip it to cook on the opposite side. To check for doneness, press the top of the pancake slightly. If an indention remains, continue to cook. If it springs back, then it is ready to remove. Serve hot.
