1 cup (200 grams) granulated white sugar
1 cup (130 grams) all-purpose flour
1/3 cup (35 grams) unsweetened cocoa powder (regular or Dutch-processed)
3/4 teaspoons baking powder
3/4 teaspoon baking soda
1/4 teaspoon salt
1 large egg
1/2 cup (120 ml) warm water
1/4 cup (60 ml) milk
1/4 cup (60 ml) canola, corn, or vegetable oil
3/4 teaspoon pure vanilla extract
Chocolate Fudge Frosting:
3 ounces (90 grams) unsweetened chocolate, coarsely chopped
1/2 cup (113 grams) unsalted butter, room temperature
1 cup (120 grams) confectioners (powdered or icing) sugar, sifted
1 teaspoon pure vanilla extract
Preheat oven to 350 degrees F (180 degrees C) and place rack in the centre of the oven. Line 24MINI-sized muffin cups with paper liners or spray each cup with a non-stick spray.
In a large bowl whisk together the sugar, flour, cocoa powder, baking powder, baking soda, and salt.
In another large bowl, whisk together the egg, water, milk, oil, and vanilla extract. Add the wet ingredients to the dry ingredients and stir, or whisk, until combined. (The batter is quite thin.) Pour or scoop the batter into the muffin cups, about 3/4 full, and bake for about 20 minutes or until a toothpick inserted in the centre of a cupcake comes out clean.
Remove from oven and let cool on a wire rack. Frost with the Chocolate Frosting.
Chocolate Frosting: Melt the chocolate in a heatproof bowl placed over a saucepan of simmering water. Remove from heat and let cool to room temperature.
In the bowl of your electric mixer, or with a hand mixer, beat the butter until smooth and creamy (about 1 minute). Add the sugar and beat until it is light and fluffy (about 2 minutes). Beat in the vanilla extract. Add the chocolate and beat on low speed until incorporated. Increase the speed to medium-high and beat until frosting is smooth and glossy (about 2 -3 minutes).
Makes 12 regular-sized cupcakes or 24 mini cupcakes.