Crust: Combine crust ingredients. Mix well; press onto bottom of 10-inch springform
pan. Bake in preheated 400 degrees F oven for 10-15 minutes. Reduce oven temperature
to 350 degrees F.
1st Layer: Crumble cheese in large bowl. Add 1 teaspoon vanilla extract, 1 cup
sugar and eggs; beat at high speed with electric mixer until blended and smooth,
about 4 minutes. Pour over crust. Bake at 350 degrees F for 40 minutes until set
(not completely firm). Remove from oven; cool 10 minutes.
2nd Layer: Combine sour cream, sugar and 1/2 teaspoon vanilla extract. Spread
over top of cheesecake. Bake at 350 degrees F for 5 minutes. Cool; spread blueberry
topping over top. Refrigerate before serving.
Topping: Mix cornstarch with cold water to form smooth paste. Stir in blueberries;
cook until thickened. Let cool; spread on cheesecake. Let cool for 1 hour, then