1. Preheat oven to 325° F. Wrap foil around bottoms of 6 2 3/4-inch ring molds, so the foil comes up the sides and place on a baking sheet. Grease bottoms and sides of molds and line bottoms with a disc of parchment. Whisk together oil, brown sugar, eggs, maple syrup and grated ginger. In a separate bowl, sift flour, baking powder, baking soda, salt and cinnamon and stir into wet mixture to blend. Stir in carrot and pineapple and pour into prepared molds. Bake for 40 minutes, until a tester inserted in the center of the cake comes out clean. Allow to cool completely before icing.
To prepare frosting, beat cream cheese and butter together. Beat in melted white chocolate and icing sugar until smooth and stir in vanilla.
To assemble, remove cakes from ring molds. Cut cakes in half horizontally. Frost bottom cake layer on top with 1/4-inch thick frosting. Lay remaining cake half on top. Spread frosting on top of cake. Repeat with remaining 5 cakes. Keep chilled until ready to serve.
Yield: Six 2 3/4-inch ring molds (6 mini cake servings).