Step 1

Preheat oven to 400 degrees F. Line 18 muffin-pan cups with paper liners.

Step 2

In large bowl, whisk oats, flour, sugar, chia seeds, baking powder, baking soda, salt, cinnamon, and ginger. In medium bowl, stir together bananas, buttermilk, oil, and egg. Fold banana mixture into flour mixture. Divide among 18 cups in muffin pan.

Step 3

Bake 20 to 25 minutes or until toothpick inserted into centers of muffins comes out clean. Cool on wire rack 10 minutes. Remove muffins from pan; cool completely on wire rack.

Step 4

Drizzle tops with chocolate.