Pineapple Butterscotch Squares
["2 c. all-purpose flour", "1 1/2 tsp. baking powder", "1/2 tsp. salt", "1/2 c. margarine", "1 c. brown sugar", "1/2 c. granulated sugar", "1 (20 oz.) can Dole crushed pineapple, well drained", "2 eggs", "1 tsp. vanilla", "1 c. (6 oz.) butterscotch chips", "1 c. chopped pecans, toasted", "vegetable cooking spray", "powdered sugar (garnish)"]
["Combine flour, baking powder and salt in small bowl; set aside. Beat together margarine, brown sugar and granulated sugar in large bowl until creamy. Add pineapple, eggs and vanilla; beat until blended. Stir in flour mixture, butterscotch and nuts until blended. Pour in 13 x 9-inch baking pan sprayed with vegetable cooking spray. Bake at 350\u00b0 for 40 to 45 minutes or until toothpick inserted in center comes out clean."]
["flour", "baking powder", "salt", "margarine", "brown sugar", "sugar", "pineapple", "eggs", "vanilla", "butterscotch chips", "pecans", "vegetable cooking spray", "powdered sugar"]