Lightly spoon flours into dry measuring cups; level with a knife. Combine flours, sugar, baking powder, and salt in a large bowl. Combine milk, butter, and egg; add milk mixture to flour mixture, stirring until smooth.
Pour about 1/4 cup batter per pancake onto a hot nonstick griddle or nonstick skillet. Cook 2 minutes or until tops are covered with bubbles and edges look cooked. Carefully turn pancakes over; cook 2 minutes or until bottoms are lightly browned.