Chewies
["1/2 c. butter or margarine", "1 c. light brown sugar", "1 c. dark brown sugar", "2 eggs", "1 1/2 c. all-purpose flour", "1 1/2 tsp. baking powder", "1/2 tsp. salt", "1 tsp. vanilla", "1 c. pecans (optional)"]
["Cream butter and sugar; add eggs.", "Stir in other ingredients. Bake in greased 9 x 13-inch pan at 325\u00b0 for 30 minutes.", "Cut when cool."]
["butter", "light brown sugar", "brown sugar", "eggs", "flour", "baking powder", "salt", "vanilla", "pecans"]