Preheat your oven to 350°F (175°C). Prepare baking sheets by greasing them or lining them with parchment paper.

In a large mixing bowl, cream together the white sugar, brown sugar, and softened butter until light and fluffy, about 2-3 minutes.

Add the egg to the creamed mixture and mix until fully incorporated, about 1 minute.

Sift in the all-purpose flour, baking soda, baking powder, salt, and add vanilla extract. Mix on low speed until just combined.

Fold in the rolled oats and coconut flakes gently until evenly distributed.

Scoop about 1 ½ tablespoons of dough for each cookie onto prepared baking sheets, leaving space between them.

Bake in the preheated oven for about 14 minutes until lightly golden brown around the edges.

Let cookies cool on the baking sheet for about 5 minutes before transferring to a wire rack.