Step 1

Preheat oven to 350º. Mix cookie crumbs and butter till blended. Press crumbs onto bottom and 1-inch up sides of 9 inch springform pan. Refrigerate while preparing filling.

Step 2

Using a stand mixer with the paddle attachment, beat cream cheese until fluffy. Add 1 cup sour cream, 1 cup sugar, Grand Marnier, tequila, lime juice and lime zest and beat until well blended.

Step 3

Add eggs 1 at a time, beating just until blended.Remove bowl from mixer and use spatula scrape bowl to make sure batter is well mixed.

Step 4

Pour filling into crust. Bake until center is just set, about 50 minutes. Mix remaining 1 cup sour cream, ¼ cup sugar and 1 tablespoon lime juice in small bowl. Pour over cheesecake. Using spatula, smooth top.

Step 5

Bake cheesecake for 5 more minutes. Place pan on rack and cool to room temperature. Refrigerate until well chilled, at least 4 hours or overnight.

Step 6

Run knife around pan sides to loosen cake. Remove pan sides. Garnish cake with orange and lime slices.