1. Prepare ALMOND CRUMB CRUST.
2. Increase oven temperature to 425°F. Combine cream cheese, sugar, sour cream, cocoa and flour in large bowl; beat on medium speed of mixer until smooth. Add eggs, almond extract and vanilla; beat well. Pour into prepared crust.
3. Bake 10 minutes. Reduce oven temperature to 250°F; continue baking 55 minutes or until center appears set. Remove from oven to wire rack. With knife, loosen cake from side of pan. Cool completely; remove side of pan.
4. Refrigerate several hours before serving. Garnish with ALMOND WHIPPED CREAM and sliced almonds, if desired. Cover; refrigerate leftover cheesecake. 10 to 12 servings.
ALMOND CRUMB CRUST: Heat oven to 350°F. Stir together 3/4 cup vanilla wafer crumbs (about 20 wafers, crushed), 1/2 cup ground blanched almonds and 3 tablespoons sugar in small bowl; stir in 3 tablespoons melted butter or margarine. Press mixture firmly onto bottom and 1/2 inch up side of 9-inch springform pan. Bake 8 to 10 minutes; cool slightly.
ALMOND WHIPPED CREAM: Combine 1/2 cup cold whipping cream, 2 tablespoons powdered sugar, 1/4 teaspoon vanilla extract and 1/8 teaspoon almond extract in small bowl; beat until stiff. About 1 cup whipped cream.