Spray a 9x13” baking pan with nonstick cooking spray.

Melt the butter in a large saucepan over low heat. Add the marshmallows and peanut butter and mix until melted. Stir in the vanilla extract.

Remove the saucepan from the heat. Add the crisp rice toasted cereal and stir to combine. Allow to cool for 5 minutes.

Gently stir in the mini chocolate chips and candy-coated chocolate. Lightly coat your fingers with nonstick cooking spray and press the cereal mixture into the baking pan. Allow to cool completely before slicing into bars