Chocolate Cupcakes

1. Preheat the oven to 350°F. Line cupcake tin with liners.
2. In a large bowl, sift together flour, sugar, cocoa powder, baking powder, baking soda, and salt.
3. In another bowl, whisk egg, vegetable oil, and milk together. Then pour the wet ingredients over the dry ingredients (step 2). Mix until well combined.
4. Pour hot water over the batter, then mix until combined.
5. Spoon batter into prepared cupcake tins, filling only halfway.
6. Bake for 17-20 minutes, or until a toothpick or testing knife comes out clean. Set aside and let cool completely.

Baileys Irish Cream Frosting

1. Place butter in a mixing bowl. Using a handheld or standing mixer with paddle attachment, cream butter until light and fluffy.
2. Add powdered sugar and mix until combined. Then add Baileys and mix until incorporated.
3. Prepare a piping bag with a star tip. Add frosting into the piping bag and set aside.

Assembly

1. First, use a spoon, knife, or an apple corer to make a hole in the center of the cupcake.
   
2. Fill the hole with a dollop of Dulce de Leche.
   
3. Pipe frosting over the cupcakes.
4. (Optional) Add sprinkles, macarons, a shot of Baileys in a a pipette, caramel or chocolate drizzle, etc.