Best Blueberry Muffins - Cook's Illustrated (Dad's recipe) Makes 12 muffins. Published September 1, 2001. This recipe does not require a standing mixer, but when making the batter, be sure to whisk vigorously in step 2, then fold carefully in step 3. There should be no large pockets of flour in the finished batter, but small occasional sprays may remain. Do not overmix the batter. These muffins are great unadorned, but for an extra flourish, give them a dip in sugar by following one of the variations. Ingredients 2 cups unbleached all-purpose flour (10 ounces) 1 tablespoon baking powder 1/2 teaspoon table salt 1 large egg 1 cup granulated sugar (7 ounces) 4 tablespoons unsalted butter , melted and cooled slightly 1 1/4 cups sour cream (10 ounces) 1 1/2 cups frozen blueberries , preferably wild Instructions 1. Adjust oven rack to middle position and heat oven to 350 degrees. Spray standard muffin tin with nonstick vegetable cooking spray. 2. Whisk flour, baking powder, and sal...