Chocolate Raspberry Tiramisu

Ingredients:
1/4 cup powdered sugar
1/4 cup (2 ounces) mascarpone cheese, softened
1/4 cup raspberry-flavored liqueur, divided
1 (8-ounce) block fat-free cream cheese, softened
12 cake-style ladyfingers, split 
11/2 tablespoons unsweetened cocoa
2 cups fresh raspberries 
Mint sprigs (optional)

Directions:
1. Place 1/4 cup of powdered sugar, mascarpone cheese, 11/2 tablespoons liqueur, and cream cheese in a large bowl, and beat with a mixer at high speed until well blended.
2. Brush cut sides of ladyfingers with remaining 2 1/2 tablespoons of liqueur. Spread about 11/2 tablespoons mascarpone mixture over bottom half of each ladyfinger,- cover with tops.
3. Arrange 3 filled ladyfingers spoke like on each of 4 dessert plates. Sprinkle evenly with cocoa. Arrange 1/2 cup raspberries over each serving. Garnish with mint sprigs, if desired.