Prepare your popcorn and set aside. Crush your peppermint, if it isn't crushed already.
Make chocolate drizzle by adding butter and chocolate to a saucepan and melting over low heat, constantly stirring. Once fully melted, remove from heat and add powdered sugar, whisking to combine. Add 1-2 Tablespoons (or more) until chocolate is to your desired consistency.
Scoop 2 cups of popcorn into serving bowl. Drizzle chocolate over popcorn and top with crushed peppermint. Pour additional popcorn on top and drizzle chocolate then peppermint again.
Serve immediately or within a few hours, enjoy!