pray a 9X13 baking pan with nonstick spray.

In a bowl, add 6 cups of the rice krispies and set aside.

In a saucepan on top of the stove, melt butter on low heat, once melted add 4 cups of the mini marshmallows, continuing to stir until melted. Remove from heat and stir in peanut butter and vanilla.

Once combined, stir mixture into the rice krispies and add marshmallow fluff and final cup of marshmallows. Stir until combined.

Press mixture into 9X13 pan and let sit for 20-30 minutes. Cut and enjoy.