Preheat oven to 375ºF. Prepare muffin tin by spraying with non-stick spray or placing liners.
In a bowl mix flour, oats, baking powder, salt and cinnamon.
In a large bowl, mash bananas. Add almond butter and egg; mix until combined.
Mix in sugar, vanilla and milk until blended.
Add dry ingredients – batter will be thin.
Bake 20-25 minutes. They freeze well, just wrap individually so you can grab-and-go.