Date Nut Bars
["2 c. brown sugar", "1/2 c. margarine", "2 eggs", "2 c. flour", "2 tsp. baking powder", "1 tsp. vanilla", "1/3 c. dates and 1/3 c. nuts or 1/3 c. nuts and 1/3 c. raisins"]
["Mix together and put in greased 8 x 13-inch pan.", "Bake at 350\u00b0 for about 35 minutes."]
["brown sugar", "margarine", "eggs", "flour", "baking powder", "vanilla", "dates"]