I made these blueberry muffins this week. They turned out awesome. The only thing I did a little differently was only make six muffins, then I took the rest of the batter and poured it into a 9x9 greased pyrex dish, to make a blueberry bread. After it cooled on a wire rack for a bit, I did notice some "holes" where the brown sugar seemed to sink in to the bread. I didn't really mind as it made the bread super moist. The bread did need to bake about 3-5 minutes longer than the muffins, or until a toothpick comes out clean. You know the drill.