01 -
Preheat the oven to 350°F (175°C) and line a 12-cup muffin tin with cupcake liners.
02 -
In a large bowl, whisk together the all-purpose flour, granulated sugar, cocoa powder, baking powder, baking soda, and salt until evenly mixed.
03 -
In a separate bowl, whisk buttermilk, vegetable oil, eggs, and vanilla extract until smooth and homogenous.
04 -
Gradually add the wet mixture into the dry ingredients, stirring gently until just combined to avoid over-mixing.
05 -
Stir in the brewed coffee until the batter is smooth and slightly thin, which will result in tender cupcakes.
06 -
Divide the batter evenly among the liners, filling them approximately two-thirds full. Bake for 18 to 22 minutes or until a toothpick inserted into the center emerges clean.
07 -
Allow cupcakes to cool in the pan for 5 minutes, then transfer to a wire rack to cool completely before frosting.
08 -
Beat softened butter on medium-high speed with a mixer until fluffy and pale, about 3 minutes. Gradually add powdered sugar on low speed to minimize dust, then increase speed. Incorporate heavy cream, vanilla extract, salt, and orange gel food coloring. Continue beating on medium-high until light and creamy, approximately 2 minutes, adjusting color as desired.
09 -
Transfer the buttercream to a piping bag fitted with a large star or round tip. Pipe tall swirls onto cooled cupcakes and optionally garnish with Halloween-themed sprinkles or decorations.