1.5 cups butter unsalted cut into pieces (3 sticks)
0.5 cup coconut milk unsweetened canned
1.5 teaspoons vanilla extract pure
0.5 cup water
Equipment
bowl
oven
whisk
plastic wrap
toothpicks
microwave
muffin liners
muffin tray
Directions
Special equipment: 12 cup jumbo muffin tin
Preheat the oven to 350 degrees F. Line the large muffin tins with large cupcake liners.
Put the butter, coffee, water, and cocoa in a microwave-safe bowl, cover with plastic wrap, and microwave on HIGH until the butter melts, about 2 minutes.
Whisk to combine.
Meanwhile, whisk the flour, granulated sugar, baking powder, salt, and baking soda in a large bowl. Beat the sour cream with the egg and vanilla in a small bowl.
Whisk the hot cocoa mixture into the dry ingredients. Stir in the sour cream mixture just to combine; don't overmix. Divide the batter evenly between the prepared muffin tins, filling each one about 3/4 of the way full (about 2/3 cup per cupcake).
Bake cupcakes until a toothpick inserted in the center of the cake comes out clean, about 30 minutes.
Cool the cupcakes completely in the tin on a rack.
Remove from liners and return cakes to a rack.
For the glaze: Put chocolate in a medium bowl. Bring coconut milk and corn syrup to a boil, stirring constantly, then pour it over the chocolate.
Let the mixture stand for 10 minutes, then stir until smooth.
Spread 1 tablespoon warm glaze evenly over each cake, then scatter the coconut over the top.