Spray an 8 x 8-inch square baking pan with non-stick spray; set aside.
Spray a large bowl with non-stick spray. Add the Rice Krispies cereal and chopped peanuts to the bowl; set aside.
In a large non-stick pan, melt the butter over low heat. Add the marshmallows, ½ cup peanut butter chips, salt and cook, stirring constantly, until melted and smooth, about 8 minutes. Add the vanilla. Pour the mixture over the cereal and peanuts and mix until incorporated. Press the mixture evenly into the prepared baking pan. Allow to cool for 15 minutes.
In a small bowl, combine the remaining ½ cup peanut butter chips and creamy peanut butter. Melt in the microwave until smooth. Sprinkle the top of the treats with ¾ cup mini-marshmallows. Drizzle the melted peanut butter mixture over top. Allow to cool until the peanut butter drizzle has set, about 1 hour. Cut into squares and serve. Enjoy!
Notes
Treats can be stored in an airtight conatiner at room temperature for up to 3 days.