Pecan Surprise Bars
["1 pkg. Pillsbury cake mix", "1/2 c. butter, melted", "1 egg"]
["Mix ingredients well together until crumbly.", "Reserve 2/3 cup mixture for filling.", "Grease bottom and sides of 9 x 13-inch baking pan.", "Press in pan and bake in 350\u00b0 oven for 15 to 20 minutes or until light brown."]
["cake mix", "butter", "egg"]