Preheat oven to 350 degrees Fahrenheit. Line a baking sheet with parchment paper.

In a large bowl, cream together the butter, sugar, and brown sugar until smooth and fluffy.

Beat in the egg and vanilla until fully combined.

In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.

Slowly add the dry ingredients to the wet ingredients and stir until just combined.

Fold in the oats, granola, cherries, coconut, and nuts if using.

Scoop cookie dough onto the prepared baking sheet using a cookie scoop.

Bake for 9 to 11 minutes, or until the edges are a perfect golden brown.

Cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.

Serve.