Pumpkin Frangelico Cheesecake

24 gingersnaps
3 tablespoons granulated sugar
1/4 cup (1/2 stick) melted butter

Filling:
16 ounces cream cheese (room temperature)
1 (16 ounce) can unsweetened solid pumpkin
5 eggs
3/4 cup firmly packed brown sugar
1/2 cup Frangelico
1 teaspoon cinnamon
1 teaspoon vanilla extract
1/2 teaspoon ground ginger
1/4 teaspoon freshly ground nutmeg
1/4 teaspoon ground cloves

Sour Cream Topping:
16 ounces sour cream
1/4 cup granulated sugar
1/4 cup Frangelico

Grind gingersnaps finely; add sugar and mix well. Add butter and mix well. Press into bottom of 9-inch springform pan. Refrigerate until ready to use.

Position rack in middle of oven. Heat oven to 350 degrees F.

Blend all filling ingredients until completely smooth. Pour filling into pan. Bake until edges of cake begin to pull away from sides of pan and cake begins to brown, almost 55 minutes.

Blend all Sour Cream Topping ingredients well. Without removing cake from oven, pour evenly over cake, starting at edges, spread if necessary. Bake 10 minutes. Remove and cool on rack.

Refrigerate for 12 hours.

Let stand at room temperature 30 minutes before serving (16 slices).