As you all know I am a sucker for a marshmallow treat. In medium microwavable bowl, microwave Next in a large bowl, mix together the Chex … Continue microwaving in 30 second bursts, stirring each time, until the … If it is bound together by marshmallow and butter there is a fair chance that I will eat it. https://www.trialandeater.com/fluffernutter-cereal-snack-bars Add the butter, peanut butter, and marshmallows to a large mixing bowl. Spray large bowl with cooking spray; add cereal to bowl. Now is the time to make our delectable no bake peanut butter Chex bars! Microwave on high for 1 minute and stir well. Begin by greasing up your 9×13 inch pan with nonstick cooking spray and then set it aside. And I might possibly be addicted to Peanut Butter … Line large rimmed pan with waxed paper.