Crust:
1/4 cup margarine
1 cup graham cracker crumbs
2 tablespoons sugar
1/4 teaspoon cinnamon

Filling:
2 pkgs. (8 oz.) Cream cheese
2/3 cup sugar
3 eggs
1 cup sour cream
1 teaspoon vanilla
2 tablespoons unsweetened cocoa
2 tablespoons sugar
2-3 tablespoons Amaretto or favorite liqueur, optional

In 9-inch microwave dish, melt butter for 30-45 seconds on High power (100%) until melted. Stir in crumb mixture, and press into dish to form crust on bottom of dish. Set aside.

Soften cream cheese for 30 seconds to 1 minute at 70% power, or until quite soft. Beat until creamy. Add 2/3-cup sugar. Mix in eggs, one at a time. Blend in sour cream and vanilla. Pour half or more of mixture into crust. Mix cocoa and remaining 2-tablespoon sugar. Add to remaining vanilla mixture along with Amaretto. Mix well and pour over vanilla filling. Swirl chocolate mixture through vanilla mixture. Microwave on Medium power (50%) for 15-18 minutes, or until center is set. Cool and refrigerate until cold and firm before serving