Screaming S'More Squares

30 squares regular or chocolate graham crackers, divided
1 (12 ounce) package semisweet chocolate chunks
6 tablespoons butter or margarine, divided
1 (10 1/2 ounce) package mini marshmallows
1 (13 ounce) package cocoa-flavored sweetened rice cereal

Line 13 x 9-inch pan with foil; grease foil. Place 15 graham squares on bottom of pan, overlapping slightly.

Microwave chocolate chunks and 2 tablespoons butter in microwavable bowl on HIGH for 2 minutes; stir until melted. Spread 1/2 the melted chocolate over graham squares.

Microwave remaining 4 tablespoons butter in 4-quart microwavable bowl on HIGH for 45 seconds or until melted. Add marsh mallows; mix to coat. Microwave 1 1/2 minutes or until melted, stirring after 45 seconds. Add cereal; mix to coat.

Press cereal mixture firmly over graham squares in pan. Drizzle with remaining melted chocolate. Immediately top with remaining 15 graham squares. Cool; cut into squares.

Makes 15.

How to press cereal mixture in an even layer: Grease bottom of flat glass or metal measuring cup. Use to press cereal mixture into an even layer.