Created by Lynn (diner524) on June 24, 2018
Step 1: In a large bowl, combine the first six ingredients; beat on low speed for 30 seconds. Beat on medium for 2 minutes.
Step 2: Pour into three greased and floured 9-in. round baking pans. Bake at 350° for 25-30 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pans to wire racks to cool completely.
Step 3: In a large bowl, combine the pineapple, sugar, 3-1/2 cups coconut and sour cream. Set aside 1 cup for frosting. Place one cake on a serving plate; top with a third of the remaining pineapple mixture. Repeat layers twice.
Step 4: Fold whipped topping into the reserved pineapple mixture. Spread over top and sides of cake. Sprinkle with toasted coconut if desired. Refrigerate until serving.