Chocolate Streusel Bars
["1 3/4 c. all-purpose flour", "1 c. sugar", "1/4 c. Hershey's cocoa", "1/2 c. butter or margarine", "1 egg", "1 (14 oz.) can sweetened condensed milk", "2 c. (12 oz.) Hershey's semi-sweet chocolate chips, divided", "1 c. coarsely chopped nuts"]
["Heat oven to 350\u00b0.", "Grease a 13 x 9 x 2-inch baking pan.", "In large bowl, sift together the flour, sugar and cocoa.", "Cut in butter until mixture resembles coarse crumbs.", "Add egg; mix well. Reserve 1 1/2 cups.", "Press remaining mixture on bottom of prepared pan.", "Bake for 10 minutes."]
["flour", "sugar", "cocoa", "butter", "egg", "condensed milk", "chocolate chips", "nuts"]