Prep Time 15 minutes mins
Cook Time 18 minutes mins
Resting Time 20 minutes mins
Total Time 53 minutes mins
For best results, use a gluten-free flour blend that already contains xanthan gum; if yours does not, whisk in 1/4 teaspoon xanthan gum with the dry ingredients for better structure. Make sure all cold ingredients come to room temperature so the batter mixes evenly and rises well, and avoid overbaking because gluten-free cupcakes dry out faster than regular ones. The hot coffee deepens the chocolate flavor without making the cupcakes taste like coffee, but hot water works if you prefer. Let the cupcakes cool fully before frosting to prevent melting, and store leftovers 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.