In a bowl mixing bowl sift together flour, sugar and baking powder. Add beaten egg and half of the butter milk. Mix together using a mixer and then add the remaining milk, a little at a time, mixing as you add it. Beat in banana and vanilla extract until well combined. Fold in the blueberries.

Preheat and grease a waffle iron. Cook the waffles according to directions on your waffle iron. Repeat until all of the batter is used up.

Top with your favorite toppings for serving.