"Custom" cookie base recipe

This recipe was featured in my Holiday Cookie Baking Class. You can read about it and get additional cookie recipes featured at the event HERE.

"Custom" cookie base

Here is the recipe I made in advance where everyone added their choice of various cookie "mix-ins." For the cookies I made today, I mixed in holiday colored white chocolate chips and chopped macadamia nuts.

1 cup butter, softened

1 cup white sugar

1 cup brown sugar

2 eggs
1 teaspoon vanilla
1 teaspoon salt

1 teaspoon baking soda

1 teaspoon baking powder

2 cups AP flour
2.5 cups processed oatmeal - this is oatmeal that has been processed in a food processor until it becomes a powder

Cream butter and sugars in stand mixer.

Add eggs one at a time.
Add vanilla.
Add combined dry ingredients in a separate bowl.

Slowly add the dry ingredients to the egg/sugar mixture.
Dough will the very thick and dense.
Add in your choice of mix ins.

Preheat oven to 350.
Line cookie sheet with parchment paper (optional).
Using a cookie scoop, drop balls of dough onto lined cookie sheet.
You could also hand roll the dough into small golf ball sized balls.
Bake in a preheated oven for 8-10 minutes.

Cool on wire rack.