In a medium bowl, peel and mash your over-ripe bananas with a fork.
Add milk (or substitute), eggs, vinegar, vanilla and oil. *note: if using melted butter, add it after the dry ingredients. Stir the wet ingredients to combine well.
In a small bowl, combine the gluten free flour, cinnamon, baking powder, baking soda, salt and sugar (optional), mixing to combine well. Add the flour mixture to the wet ingredients, stirring until fully combined. If using melted butter instead of oil, add that now combining well.
Once the batter is fully combined it will still be a little lumpy from the bananas. You can make the mix a day ahead and store it covered in the fridge. It may oxidize some and change color slightly, but will still be good to use.
Grease and heat your pan over medium heat. Pour pancake batter into approximately 4 inch circles. Once it bubbles, it should be ready to flip.
Once browned on both sides, remove and place on a baking sheet in a 200 degree oven to keep warm until ready to serve. Repeat process until you have used all of the batter.
Serve with sliced bananas or other fruit on top. Drizzle with maple syrup, honey, nut or seed butter. For a special treat, we drizzle with chocolate.