Prepare the blueberries - you can use fresh if you have them, but frozen blueberries are at the peak of freshness, less expensive, and last for a very long time in your freezer. I always have some on hand, in case I feel like making these muffins.
FRESH - If your blueberries are fresh, you don’t have to prep them. Just add them as is to the batter. FROZEN - These need the prep. Measure out your 2 cups of frozen blueberries, and place them in a strainer in the sink. Run cold water over them until the water coming from the blueberries runs clear. The water will start out blue, and if you skip this step, your muffins will be tinted blue as well. Once this is done, let them start to dry (they don’t need to be bone dry).