Alfonso's Loft Sweet Potato Cheesecake

1/4 cup butter or margarine, melted
1/4 cup granulated sugar
1 3/4 cups graham cracker crumbs
2 medium sweet potatoes, baked and peeled
16 ounces cream cheese
3/4 cup granulated sugar
2 eggs
1/4 cup orange liqueur or orange juice
1 teaspoon ground cinnamon
1/8 teaspoon ground cloves
Pinch of nutmeg
1 teaspoon vanilla extract
1 cup sour cream
Whipped cream, sweetened

Mix butter, sugar, and graham cracker crumbs and press into bottom and up sides of a 9-inch spring-form pan. Bake 10 minutes at 350 degrees F.

In a large mixing bowl, beat sweet potatoes until smooth. Add cream cheese and beat until blended. Add remaining ingredients except whipped cream and beat until well mixed. Pour into cooled crust and bake at 350 degrees F for 50 minutes.

Store in refrigerator but let stand at room temperature for about 30 minutes before serving.

Serve with whipped cream.

Source: Alfonso�s Loft, Granbury, Texas