Pumpkin Cheesecake

This was originally my first-ever venture into the yummy world of pumpkin cheesecakes. For a few years, it was my tradition at work to bring one in on the day after Thanksgiving. Sadly, this past year, with having to make three different cheesecakes that week, it just didn't happen. This was my original recipe.

Ingredients:
1½ cups graham cracker crumbs
1/3 cup butter or margarine, melted
¼ cup granulated sugar

3 packages (8 oz. each) cream cheese, softened
1 cup granulated sugar
¼ cup packed light brown sugar
2 large eggs
1 can (15 oz.) Libby's 100% Pure Pumpkin
2/3 cup (5 fl.-oz can) evaporated milk
2 Tbsp cornstarch
1¼ tsp ground cinnamon
½ tsp ground nutmeg

1 container (16 oz.) sour cream, at room temperature
1/3 cup granulated sugar
1 teaspoon vanilla extract

Directions:
Preheat oven to 350F.

FOR CRUST:
Combine graham cracker crumbs, butter and granulated sugar in medium bowl. Press onto bottom and 1 inch up side of 9-inch springform pan. Bake for 6 to 8 minutes (do not allow to brown). Cool on wire rack for 10 minutes.

FOR CHEESECAKE:
Beat cream cheese, granulated sugar and brown sugar in large mixer bowl until fluffy. Beat in eggs, pumpkin and evaporated milk. Add cornstarch, cinnamon and nutmeg; beat well. Pour into crust.

Bake for 55 to 60 minutes or until edge is set but center still moves slightly.

FOR TOPPING:
Combine sour cream, granulated sugar and vanilla extract in small bowl; mix well. Spread over surface of warm cheesecake. Bake for 5 minutes. Cool on wire rack. Refrigerate for several hours or overnight. Remove side of springform pan