Coat a a large nonstick skillet (or griddle) with cooking spray; heat over medium heat. Without stirring the batter, measure out three 1/4 cup pancakes, pouring the batter into the pan. Cook until the edges are dry and you see bubbles on the surface, 2 to 4 minutes. Flip and cook until golden brown on the other side, 2 to 4 minutes more. Repeat with the remaining batter, coating the pan with cooking spray and reducing the heat as needed.