Prep Time 20 minutes mins
Cook Time 18 minutes mins
Resting Time 30 minutes mins
Total Time 1 hour hr 8 minutes mins
For best results, use room-temperature ingredients so the batter mixes evenly and the cupcakes rise well, and avoid overmixing once you add the dry ingredients to keep the crumb tender. Finely dicing the strawberries helps them distribute without sinking, and lightly tossing them in a teaspoon of flour before folding in can also prevent sinking in very thin batters. Make sure the cupcakes are completely cool before frosting or the buttercream will melt and slide. If your frosting seems too loose, add a little more powdered sugar or chill it briefly; if it’s too stiff, mix in a teaspoon of milk at a time. These cupcakes keep well covered in the refrigerator for up to 3 days, but for the best flavor and texture let them sit at room temperature for 15–20 minutes before serving.