1. For crust, combine graham cracker crumbs and melted butter. 2. Stir until well combined. 3. Press onto bottom and about 2-1 / 2 inches up the sides of a 9x3-inch springform pan. 4. Mix cream cheese, sugar, flour, and vanilla. 5. Beat with an electric mixer until fluffy. 6. Add eggs and egg yolks, beating on low speed just until combined. 7. Stir in whipping cream and lemon peel. 8. Pour into pan. 9. Place pan in a shallow baking pan in the oven.( Does not mention anything about a water bath) 10. Bake in a 325 degree F oven about 1-1 / 2 hours or until center appears nearly set when shaken.