Double Orange Cheesecake

Directions

1. 1
   Preheat oven to 350; grease a 9 inch springform pan with 3 inch sides.
2. 2
   Crust: in a bowl, mix graham cracker crumbs and butter; press into the bottom of pan and freeze.
3. 3
   Filling: in a big mixer bowl, beat ricotta, cream cheese, and sugar on med-high speed for 3 minutes.
4. 4
   Add egg yolks, one at a time, beating after each addition.
5. 5
   Mix in flour, salt, cream, zest, and liqueur.
6. 6
   In a clean bowl, whip egg whites until firm.
7. 7
   With a rubber spatula, fold egg whites into batter.
8. 8
   Pour over frozen crust.
9. 9
   Bake for 45-55 minutes or until the top is light brown and the center has a slight jiggle to it.
10. 10
    Cool on a rack for 2 hours.
11. 11
    Cover with plastic wrap and refrigerate for at least 6 hours before decorating and serving.
12. 12
    Ice top of cake with sweetened whipped cream or pipe a ribbon around border, if desired.