10 Minute Baked Bananna Bread Doughnut Holes

-1 1/2 cups flour

-1 teaspoon baking soda

-1/2 cup butter (softened)

-2 eggs

-1 cup sugar (+ 1/2 cup for dusting)

-2 large very ripe bananas

-1 tablespoon vanilla extract

-1/2 cup milk

-1/4 cup cinnamon (for dusting)