Heat oven to 450°F. Remove pie crust from pouch; place flat on ungreased cookie sheet.
In medium bowl, mix 1/2 cup sugar, the cornstarch and cinnamon. Gently stir in apples. Spoon apple mixture onto center of crust, spreading to within 2 inches of edge. Fold crust edge over filling to form 2-inch border, pleating crust as necessary. Brush crust edge with water; sprinkle with 1 teaspoon sugar.
Bake 15 minutes or until crust is golden brown. Sprinkle pecans over apple mixture. Bake 5 to 15 minutes longer or until apples are tender. Serve with whipped cream.