Preheat oven to 350 degrees. Prepare cake mix according to package directions; ... sour cream and lemon juice. Remove cake from oven ... is set (like custard). Cool completely, then sprinkle with cinnamon. Keep refrigerated.
Preheat oven to 350 degrees. ... baking pan. Mix cake mix as directed. Fold in ... sour cream and lemon juice. Spread over hot cake. ... serve hot. Refrigerate leftovers.