Heat griddle or skillet over medium-high heat or electric griddle to 375 degrees F; grease with cooking spray, vegetable oil or shortening. (Surface is ready when a few drops of water sprinkled on it dance and disappear.)
In medium bowl, stir together pancake ingredients until blended. Pour by slightly less than 1/4 cupfuls onto hot griddle. Cook until edges are dry. Turn; cook until pancakes are golden brown. Stack on serving plates.
In small bowl, beat powdered sugar, milk and 1/2 teaspoon vanilla with whisk until smooth.
To serve, top each serving with glaze and additional candy sprinkles.