Frozen Creamsicle Cake

Directions

1. 1
   Line loaf pan with a double layer of plastic wrap, allowing a few inches of overhang along sides.
2. 2
   Stir together cookie crumbs, zest, butter, and corn syrup in a small bowl, then press into bottom of loaf pan.
3. 3
   Spread sorbet evenly over crumb crust and freeze 30 minutes to harden.
4. 4
   While sorbet is freezing, slightly soften frozen yogurt.
5. 5
   Spread evenly over sorbet and freeze, covered with plastic wrap, until firm, at least 2 hours.
6. 6
   Using plastic wrap as an aid, lift frozen cake out of pan, then peel off plastic.
7. 7
   Let stand 5 minutes to soften, then cut crosswise into 4 slices.