01 -
Preheat the oven to 350°F (175°C) and line a 12-cup muffin tin with cupcake liners.
02 -
In a medium bowl, whisk together the flour, unsweetened cocoa powder, baking soda, and salt until well blended.
03 -
In a large bowl, beat the unsalted butter and sugar together until light and fluffy, then incorporate the eggs one at a time followed by the vanilla extract.
04 -
Gradually add the dry ingredients and buttermilk alternately to the wet mixture, beginning and ending with the dry ingredients, mixing until combined.
05 -
Carefully stir in the boiling water until the batter is smooth and uniform in texture.
06 -
Spoon batter halfway into the prepared muffin cups, add 1 tablespoon of raspberry preserves in the center of each, then top with remaining batter to fill.
07 -
Bake for 18 to 22 minutes, or until a toothpick inserted near the edge of a cupcake comes out clean.
08 -
Beat the unsalted butter until creamy, gradually add powdered sugar, then mix in raspberry puree, vanilla extract, and a pinch of salt until smooth and fluffy.
09 -
Allow cupcakes to cool completely before frosting with raspberry buttercream and garnish each with fresh raspberries.