Whisk together all ingredients, except for blueberries, in a large bowl.
Preheat a griddle or large skillet over medium heat. Spray griddle with cooking spray and use a tablespoon or ¼ cup measure to drop batter onto griddle. Top each pancake with a few blueberries. Let set for a few minutes, and then flip with spatula. Cook for an additional minute or two on remaining side and remove to plate.
Serve with additional blueberries, butter, and syrup, if desired.