Step 1: Preheat oven to 350 degrees Fahrenheit. Line baking pan with parchment paper.
Step 2: Place graham crackers into resealable bag and crush into crumbs until you get 1-1/2 C of graham cracker crumbs.
Step 3: Combine 1-1/2 C of graham cracker crumbs and 1/2 melted salted butter.
Step 4: Press combination onto bottom of pan until it creates a solid base.
Step 5: Pour and spread the sweetened condensed milk over the graham cracker layer.
Step 6: Sprinkle 1/2 C oats, 2 C chocolate chips, 1 C butterscotch chips, and 1 C M&Ms on top of sweetened condensed milk layer.
Step 7: Bake pan between 23-30 minutes. Let cool.