Frozen Raspberry Layer Cake

2 10 3/4-ounce frozen pound cakes, crusts removed, sliced into 1/4-inch-thick slices
3 cups vanilla ice cream, slightly softened
4 cups raspberry sorbet, slightly softened
1 pint fresh raspberries, rinsed and picked over
3 tablespoons Chambord or other raspberry-flavored liqueur

DIRECTIONS:

1. Prepare the pan: Trace and cut out a 9-inch circle from parchment paper and fit it into the bottom of a 9-inch springform pan. Cut out a 3- by 27-inch strip of parchment and fit around the inside of the pan. Tape to secure parchment paper and set aside.

2. Assemble the cake: Cover the bottom of the pan with a single layer of pound cake slices and spread the ice cream evenly over the cake. Freeze until ice cream hardens — about 25 minutes. Spread 2 cups sorbet over the ice cream followed by another layer of pound cake slices. Return cake to the freezer for 10 minutes. Combine the raspberries and the Chambord together in a small bowl. Remove the cake pan from freezer and place the berries evenly over the cake. Top with a final layer of pound cake and the remaining sorbet. Wrap tightly with plastic wrap and freeze until firm — at least 4 hours