Turn on waffle iron. Mix together all ingredients, except oil for the waffle iron. When iron is hot, spray with oil on the top and bottom. Scoop 1/4 cup of the batter onto the center of the waffle iron. Flatten a bit with a spatula. Close waffle iron and press to spread batter evenly. Let cook 90 seconds to 2 minutes, pressing again for the final 10 seconds. Open waffle iron, use a spatula to lift out waffle. Repeat two more times with remaining batter. Serve immediately.