Preheat oven to 350˚F. Line a 8”x8” baking pan with parchment and set aside.
Oatmeal cookie dough: In a mixing bowl whisk together flour, baking soda, salt, cinnamon, and nutmeg. Set aside.
In another mixing bowl, cream together butter and sugars. Add eggs and vanilla and continue to mix together. Scrape down sides of the bowl and add dry ingredients. Stir together until well combined and a dough forms. Fold in oats until fully incorporated.
Coconut macaroon: Place all the ingredients into a mixing bowl and stir together until fully combined.
To assemble: Press dough into the bottom of the baking dish, in an even layer. Pour macaroon mixture over the cookie dough and spread evenly over the entire surface.
Bake in the oven for 30 to 35 minutes or until golden brown and the cookie dough cooks through.
Allow the dish to cool, at least 30 minutes before cutting into bars and serving.