Preheat oven to 350°F (175°C). Line a 12-cup muffin pan with cupcake liners.

2. Mix Dry Ingredients

In a bowl, whisk together flour, cocoa, baking powder, baking soda, and salt.

3. Cream Butter & Sugars

Beat butter with granulated and brown sugar until fluffy (about 2 minutes).

4. Add Eggs & Vanilla

Mix in eggs one at a time, then stir in vanilla.

5. Add Melted Chocolate

Incorporate melted chocolate until smooth.

6. Combine Wet & Dry

Add half of the dry mixture, then buttermilk, followed by the remaining dry mixture. Mix gently until combined.

7. Add Hot Coffee