Melt butter in a microwave safe bowl. Pour into an electric mixer fitted with paddle attachment. While still hot, add both sugars and mix on low until combined. Let sit to cool for a few minutes.
While butter mixture is cooling, combine flour, baking soda, and salt in a medium bowl. Stir and set aside.
Turn mixer (with butter mixture bowl attached) on low. Add eggs, one at a time, mixing completely. Mix in vanilla extract. Add flour mixture to the wet ingredients and mix until combined. Add chocolate chips, M&Ms, Reese’s, Crunch bars, and Twix bars; stir to combine.
Chill for 30 minutes to one hour, until cooled.
Preheat oven to 350°. Drop by tablespoonfuls onto parchment lined cookie sheets. Bake for 10-12 minutes (depending on size). Cookies made from my 2-tablespoon cookie scoop baked in 11 minutes. Let cool for 5 minutes, and then remove from pans to cool completely.