Line a 9×13 baking pan with parchment paper. Lightly grease the parchment and pan with nonstick spray. Set aside.
Add the butter to a large pot over medium low heat. Let it melt completely. 1/2 cup unsalted butter
Add in 6 cups of the marshmallows, and stir together gently until marshmallows are completely melted. 7 cups mini marshmallows
Remove the pan from the heat and stir in the vanilla extract, peppermint extract, and salt. 1 tsp vanilla extract, 1/2 tsp peppermint extract, 1/4 tsp salt
Add in the cereal, and remaining 1 cups of marshmallows and stir until the cereal is coated evenly with the melted marshmallow mixture, and the other marshmallows just start to melt. 8 cups crisp rice cereal
Scoop the mixture into the prepared pan.
Sprinkle 1/3 of the candy cane pieces over the top of the rice krispie treats. 1/2 cup crushed candy cane pieces ,
Add the white chocolate chips to a small bowl and microwave in 20 second increments, stirring after each until you can stir it smooth. 1/2 cup white chocolate chips
Transfer the white chocolate to a ziptop bag and snip the corner. Drizzle over the top of the treats.
Add the remaining candy cane piece over the top of the rice krispie treats sprinkled evenly.
Allow the treats to set and cool to room temperature for about 1 hour, then slice into pieces and enjoy.