Pecan Pie Bars
["1 Butter Recipe yellow cake mix", "1/3 c. margarine or butter, softened", "1/2 c. brown sugar", "1 1/2 c. corn syrup", "1 tsp. vanilla", "3 eggs", "1 c. chopped pecans"]
["Heat oven to 350\u00b0. Grease 13 x 9-inch pan. Reserve 2/3 cup of the dry cake mix for filling. Combine remaining cake mix, margarine and 1 egg; beat at a low speed until well blended. Press in bottom of greased pan. Bake at 350\u00b0 for 15 to 20 minutes or until light golden brown."]
["Butter", "margarine", "brown sugar", "corn syrup", "vanilla", "eggs", "pecans"]