¾ cup firmly packed dark brown sugar
¾ cup all-purpose flour
¾ cup butter, melted
1 large egg
1 cup light corn syrup
1 cup granulated sugar
1 cup creamy peanut butter
4 cups Rice Krispies cereal
1 pkg (12-oz) semi-sweet chocolate chips
1 pkg (10-oz) peanut butter chips
1 cup chopped dry-roasted peanuts
Preheat oven to 350°.
Combine first 5 ingredients in a medium bowl. Press firmly onto bottom of a lightly greased 15x10" pan. (Mixture will be thin.)
Bake at 350° for 12 minutes. Let cool on a wire rack 10 minutes.
Microwave corn syrup, sugar, and peanut butter in a large microwave-safe glass bowl on high for 2 minutes or until melted and smooth, stirring at 30-second intervals. Stir in cereal. Press mixture firmly over oat mixture in pan.
Microwave chocolate and peanut butter morsels in a microwave-safe glass bowl on high for 1 to 1½ minutes or until melted and smooth, stirring at 30-second intervals. Spread over cereal mixture. Sprinkle with chopped peanuts.
Cool 45 minutes. Cut into bars.