I love a good blueberry muffin. The kind of mythical blueberry muffin that has the perfect balance of blueberries to fluffy moist muffin dough that you discover at a breakfast cafe in a small town. The kind of magical blueberry muffin that is so delicious that you buy extra to take home for the next morning. The kind of muffin that I could NEVER find a recipe for in a cookbook. Year after year, I baked blueberry muffins that were, to say the least, underwhelming. Until I stumbled upon brown butter blueberry muffins.