By Tessie2
6 cups [1.5 L] popped corn, approximately 1/2 cup [125 mL] corn kernels
6 cups [1.5 L] shreddies cereals
1 cup [250 mL] salted peanuts
1/2 cup [125 mL] butter or margarine
1/2 cup [125 mL] smooth peanut butter
1 [8-ounce / 227-g] bag large marshmallows
Toss together popped corn, cereals and salted peanuts; set aside.
Into a large microwave-safe bowl, melt together butter or margarine and peanut butter at medium-high, for 1 minute.
Add marshmallows; microwave for 1 minute longer, until marshmallows puff.
Stir in cereals mixture, until well coated.
Pour into 2 greased 15 x 10-inch [38 x 25-cm] pans.
Bake into a preheated 250°F [120°C] oven for 10 minutes; cool.
Break into small pieces.
Store into airtight containers.