Mix chocolate crumbs, cinnamon, and butter together and press into a 9-inch springform pan. Bake at 350 degrees F for 10 minutes. Remove and cool.
Mix together cream cheese and sugar until well blended. Beat in flour. Add eggs one at a time, mixing well after each addition. Beat in sour cream. Blend in the melted chocolate and vanilla. Pour over prepared crust. Bake at 425 degrees F for 15 minutes that then lower oven to 300 degrees F. Bake for an additional 45 minutes and then turn oven off and allow the cake to cool down with the oven for an hour. Remove from oven and cool completely. Refrigerate.
Nutritional data has not been calculated yet.
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