GREASE 13 x 9-inch baking pan.
SET aside 20 Nestlé Nesteggs to use for garnish. Chop remaining Nestlé Nesteggs. Combine rice cereal and chopped Nestlé Nesteggs in large bowl; set aside.
MELT butter in large bowl; add marshmallows. Microwave on HIGH (100%) power for 2 minutes. Stir until smooth. Add cereal and Nestlé Nesteggs mixture; stir until well coated. Spread mixture into prepared baking pan using buttered spatula. Immediately press reserved Nestlé Nesteggs into top. Let cool completely; cut into 20 squares.