Cover your cookie sheet with parchment paper or a baking mat.
Cream the butter in your stand mixer until smooth.
Add in the sugars and beat until light and fluffy.
Add in the vanilla extract and your eggs one at a time and beat until combined.
Add in the vanilla extract and mix until combined.
Now, the recipe says to combine the dry ingredients (flour, baking powder, and baking soda) in a separate bowl and then stir the dry ingredients into the creamed mixture by hand. I, however, dump in the dry ingredients, and without digging too deep, give them a little floofing together, before I switch on the mixer for a moment to combine.
Stir in the oats, the cereal, and the coconut by hand or, do what I did, and briefly give them a mix. My way does run the risk of crushing the cereal or overmixing the dough, so do pay attention and only mix to combine.
Drop the dough, using a 1 1/2 Tablespoon cookie dough scoop onto your prepared cookie shees.
Bake 8-12 minutes, depending on your oven and the size you make your cookies. My cookies took 8 minutes to bake. They should be lightly browned and look "done."