Prep Time 20 minutes mins
Cook Time 20 minutes mins
Resting Time 30 minutes mins
Total Time 1 hour hr 10 minutes mins
For best results, ensure all refrigerated ingredients are at room temperature to create a smoother batter and higher rise, and avoid overmixing once the flour is added so the cupcakes stay tender. If using frozen blueberries, do not thaw them first and bake for an extra minute or two to account for the chill. Lightly coating the berries in flour helps prevent them from sinking to the bottom. Let the cupcakes cool fully before frosting to keep the buttercream from melting, and store them in an airtight container at cool room temperature for a day or in the fridge for up to three days, bringing them back to room temperature before serving for the best texture and flavor.