Preheat oven to 350 degrees and line muffin tin with liners. Alternatively, spray muffin tin with non-stick cooking spray.
Whisk together sugar, flour, cocoa, baking powder, baking soda, salt and coffee granules (if using). Note – the coffee granules will only enhance the chocolate flavor and will not make the cupcakes taste like coffee.
Add in the egg, milk, oil and vanilla. Whisk together until mixture is thick. Add in water and mix until smooth.
Divide batter equally between muffin cups (using an ice cream scoop really helps with this) and tap the pan on the counter to eliminate any bubbles. Bake at 350 15-17 minutes or until toothpick comes out clean with only a few crumbs. Transfer to wire rack to cool completely before frosting.
Makes 6-8 cupcakes. (I find that when I use cupcake liners I get eight, but only six when I don’t use liners.)