Step 1

Preheat oven to 375° F. Line a large baking sheet with parchment paper.

Step 2

In a medium bowl, cream together the butter, peanut butter, and sugars. Mix in the eggs and vanilla extract. In a separate bowl, sift the flour, baking soda, cinnamon, and nutmeg; add it to the creamed butter mixture. Fold in the mashed banana, oats, and chocolate chips until blended.

Step 3

Using a tablespoon-sized cookie scoop, add rounded tablespoons of dough to the parchment-lined baking sheet leaving 2 inches between each ball of dough. Bake for 10-12 minutes on the center oven rack. Cookies will be puffy, and golden-brown.

Step 4

Cool cookies on a baking rack and repeat the baking process.