Prep Time 15 minutes mins
Cook Time 18 minutes mins
Total Time 33 minutes mins
For the best bakery-style Raspberry Muffins, use room-temperature butter, eggs, and buttermilk so the batter mixes smoothly and bakes evenly. If you're using frozen raspberries, add them straight from the freezer without thawing to prevent the batter from turning purple. Be careful not to overmix once the flour is added, as this can make the muffins dense instead of light and fluffy. Store the cooled muffins in an airtight container at room temperature for up to 3 days, refrigerate for up to 6 days, or freeze for up to 3 months. For that fresh-from-the-oven taste, warm a muffin in the microwave for 10–15 seconds before serving.