FOR THE CRUST: Preheat oven 325 degrees. Grease springform pan. Combine 2 1/2 cups of animal cracker crumbs and 1/4 cup butter in a small bowl. Press in bottom of pan and bake 10 minutes. Set aside to cool then wrap the outside of the pan with foil.

FOR THE CHEESECAKE FILLING: Reduce the heat to 300 degrees. In a large mixing bowl mix the cream cheese, sugar, and flour on low speed. Add the sour cream and vanilla still mixing on low speed. Add one egg at a time mixing on low speed. Stir in 1 1/4 cups of the frosted animal cracker crumbs. Stir slowly. Pour the cheesecake mixture over the crust. Place the foil wrapped springform pan in another bigger pan and fill with warm water half way up the sides of the springform pan.

Bake for 1 and 1/2 hours. Turn the oven off and leave in the oven for another 30 minutes. Remove cheesecake from oven and let sit until cool. Refrigerate for 5 or 6 hours.

TO MAKE THE GANACHE: Melt the white chocolate with the whipping cream. Let cool and color with pink food coloring. When cooled completely spread over the top of the cheesecake then sprinkle remaining animal cracker crumbs and rainbow sprinkles. Dollop whipped cream around edge of cake.