Stir wet ingredients into dry until just combined. Let batter rest 5 minutes.
Heat a griddle or electric skillet to medium. Grease lightly with butter. Drop batter onto cooking surface in generous tablespoons. Cook pancakes until edges appear dry, 3 to 4 minutes, then flip and continue to cook 2 to 3 minutes more.
Continue until all of the batter has been used. Serve with sour cream, chopped pecans and pancake syrup.