Add the butter and sugars to a large bowl and beat together for about 2-3 minutes until smooth. 1 cup unsalted butter, 1 cup brown sugar, 1/2 cup granulated sugar
Add in the eggs and vanilla extract and beat until just incorporated. 2 large eggs, 1 tsp vanilla extract
Dump in the flour, baking soda, baking powder, and salt. Mix together until you have a soft cookie dough. 2 1/2 cups all purpose flour, 1 tsp baking soda, 1 tsp baking powder, 1/2 tsp salt
Add in the most of the mix ins, except about 2 TBS of each (Reserving to add on the cookies after they are baked). Fold them evenly into the dough. 1 cup white baking chips, 1 cup Christmas m&ms, 1 cup chopped pretzels, 1 cup chopped potato chips , 1/4 cup Christmas sprinkles
Cover the cookie dough and place it in the fridge for at least 1 hour, up to overnight.
Preheat the oven to 350 degrees Fahrenheit. Line a baking pan with parchment paper.
Measure out the batter to be 2 heaping tablespoons. Roll the dough into balls.
Place 6-9 cookies per cookie sheet, about 3 inches apart each.
Place in the oven to bake for about 10-12 minutes, or until the cookie top and bottom are golden. (Mine usually take 10 minutes)
Remove the cookies from the oven and use a large cup or round cookie cutter placed around the cookies, and gently swirl them together to make the cookies round.
Top each cookie with extra m&ms, white chips, pretzels, and chips.
Allow the cookies to rest on the pan for about 5 minutes.
Remove to a cooling rack to cool completely, or enjoy warm.