Preheat oven to 350 degrees F.

In a bowl, whisk eggs, mashed banana, maple syrup, and vanilla.

In another bowl, mix together oats, flour, chocolate chips, baking powder, salt, and cinnamon.

Add the egg mixture (wet ingredients) to the oat mixture (dry ingredients) and stir.

Spread batter into an 8x8 baking pan lined with parchment paper.

Bake for about 20 minutes, or until set in middle and golden around edges.

Let cool and cut into 16 squares.