These bakery-style blueberry muffins are exceptionally tender and moist thanks to the sour cream in the batter, which also provides a subtle tang that balances the sweetness. They feature a golden-brown, slightly crisp crown and are bursting with fresh blueberries in every bite.
Storage: Cool muffins completely, then store in an airtight container at room temperature for up to 2 days. For longer storage, wrap individually in plastic wrap and freeze in a freezer bag for up to 3 months. Reheating: To refresh, wrap a room-temperature muffin in a paper towel and microwave for 15-20 seconds. For frozen, thaw overnight at room temperature or microwave on defrost for 30-45 seconds, then warm as above. For a crisp top, warm in a 300°F / 150°C oven for 5-8 minutes.
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