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 to ensure a smooth batter and even rise, and avoid overmixing once the dry ingredients are added so the cupcakes stay tender. The hot coffee intensifies the chocolate flavor without making the cupcakes taste like coffee, but you can substitute hot water if preferred. Weighing ingredients with a kitchen scale improves consistency, and checking doneness a minute or two early prevents dry cupcakes. Let the cupcakes cool fully before frosting or the buttercream will melt, and store them in an airtight container at room temperature for up to 2 days or refrigerate for longer, bringing them back to room temperature before serving for the best texture and flavor.