Preheat oven to 350°. In a small bowl, mix cracker crumbs, brown sugar, cocoa and salt; stir in yogurt. Press onto bottom of a greased 9-in. springform pan. Place pan on a baking sheet. Bake 10 minutes. Cool on a wire rack. Reduce oven setting to 325°.
In a large bowl, beat cream cheese and sugar until smooth. Beat in pumpkin, sour cream, flour, vanilla and spices. Add eggs and egg yolk; beat on low speed just until blended. Pour into crust. Return pan to baking sheet.
Bake 1-1/4 to 1-1/2 hours or until center is almost set. Cool on a wire rack 10 minutes. Loosen sides from pan with a knife. Cool 1 hour longer. Refrigerate overnight, covering when completely cooled.
We and our partners use cookies on this site to improve our service, perform analytics, personalize advertising, measure advertising performance, and remember website preferences.Ok