Rose Levy Beranbaum's cookbooks are by far my favorite. I would highly recommend it to serious bakers as the recipes are tried, tested and proven to be wonderful!
Her corn muffin recipe, from her Bread Bible was originally meant to include blueberries, but I have done without them. Sour cream is the special ingredient here. Not too sweet at all, fresh, and tasty! I make them in batches of 3 - 5 and load the muffin cups extra high (producing high domes and mountain peaks). There are soo.. light and fluffy with great flavour.