I have a unopened container of sour cream to use up. This site has a great list of recipes that all call for sour cream. I'm particularly intrigued by the corn casserole. I don't have any corn bread mix. Luckily I found a Jiffy Mix corn bread clone recipe here.
I think this would go well with veggie Italian sausages with onions and peppers. Since I have leftover pasta sauce I could make a sausage cacciatore.