Tiramisu Layer Bars

Heat oven to 350°F. Line 9-inch square pan with foil, leaving 1 inch of foil overhanging at 2 opposite sides of pan; spray foil with cooking spray. In medium bowl, mix cookie crumbs and butter. Press in pan. Bake 10 minutes. Cool completely, about 30 minutes.

Meanwhile, in 1-quart saucepan, heat coffee and granulated sugar to boiling over medium-high heat, stirring occasionally. Remove from heat. Cool completely, about 30 minutes. Stir in liqueur.

Cut pound cake into 13 (1/2-inch) slices; trim to level top of each slice.

In chilled large bowl, beat whipping cream and powdered sugar with electric mixer on high speed until soft peaks form. Add mascarpone cheese; beat on medium speed until stiff peaks form (do not overbeat). Spread half of whipped cream mixture over crust in pan. Top with pound cake slices, fitting snugly together. Brush with coffee syrup mixture until absorbed. Spread with remaining whipped cream mixture. Sift or sprinkle cocoa over top.

Cover; refrigerate 2 hours. Use foil to lift out of pan. Cut into 6 rows by 4 rows. Store covered in refrigerator.