Drain pineapple; reserve 1/2 cup juice. Melt 1/4 cup margarine in a 10-inch ovenproof skillet. Blend in brown sugar. Arrange pineapple over sugar mixture and top with 1/2 cup raisins. Beat remaining 1/4 cup margarine with granulated sugar until light and fluffy. Beat in eggs, vanilla and carrots. Combine dry ingredients. Beat 1/3 dry ingredients into creamed mixture. Beat in 1/2 cup reserved syrup until blended. Repeat, ending with dry ingredients. Fold in the remaining 1/2 cup raisins. Pour batter over pineapple. Bake in preheated 350 degree oven 40-45 minutes. Let stand 5 minutes before inverting onto serving plate. A third place winner at the Del Mar Ca county fair. Jo Anne Merrill