Brown Sugar Squares
["2/3 c. margarine", "2 c. brown sugar", "3 eggs", "1 tsp. vanilla", "1/2 tsp. salt", "1 tsp. baking powder", "2 c. flour", "1 c. chopped nuts", "1 large bag chocolate chips or 1 (7 oz.) pkg."]
["Mix thoroughly and bake 16 to 20 minutes at 375\u00b0 in a 10 x 14-inch pan.", "When cool, cut into squares."]
["margarine", "brown sugar", "eggs", "vanilla", "salt", "baking powder", "flour", "nuts", "chocolate chips"]