Ardyce Piehl of Wisconsin Dells, Wisconsin relates, "These moist muffins are chock-full of blueberries. I keep frozen berries on hand-it's so convenient to be able to fold them frozen into the muffin batter."
Little nutmeg-scented mini muffins are rolled in cinnamon sugar to make a treat that tastes like a donut and is fast to whip up. You can substitute butter for margarine.