01 -
Set your oven to 350°F (175°C). Pop paper liners into a regular 12-cup muffin pan.
02 -
Grab a medium mixing bowl and combine cocoa powder, flour, salt, and baking soda by whisking them. Put it to the side.
03 -
In a bigger bowl, blend melted butter with brown sugar until it's smooth. Add the eggs one at a time, mixing well in between. Stir in the vanilla, mashed blackberries, and buttermilk till everything's together.
04 -
Carefully mix the dry stuff into the wet bowl. Don’t overdo it—just stir until they’re barely combined.
05 -
Slowly drizzle in the hot coffee or water, giving it a gentle mix till smooth. Don’t worry about the batter being runny!
06 -
Spoon the batter into the liners, filling each about three-quarters of the way.
07 -
Bake for roughly 18 to 22 minutes. Check if they’re done using a toothpick—if it comes out clean or just a touch crumbly, they’re ready!
08 -
Let the cupcakes sit in the pan for 5 minutes after baking. Then transfer them to a cooling rack so they’re completely cool before frosting.
09 -
While cupcakes cool, blend fresh blackberries till smooth. Push the puree through a fine sieve to remove seeds, pressing with a spoon to get all the liquid.
10 -
Using a mixer, beat softened butter until it’s creamy, about 2 minutes. Slowly add powdered sugar on low speed. Then mix in the strained blackberry juice and vanilla. Adjust thickness with heavy cream if needed. Beat for 3-4 minutes till fluffy.
11 -
Make sure your cupcakes are totally cool. Spread or pipe the frosting on top.
12 -
If you want to fancy them up, add a blackberry, some chocolate curls, or edible flowers before serving.