1cup(120g)all-purpose flour, (stir, spoon, and level when measuring)
½cup(40g)unsweetened cocoa powder, (not hot chocolate mix)
¾tspbaking powder
¾tspbaking soda
½tspsalt
1large/XL egg
½cup(118ml)milk
⅓cup(80ml)oil, (vegetable/canola)
1tspvanilla extract
½cup(118ml)boiling water
Instructions
Preheat oven to 350 degrees Fahrenheit. Line muffin tins with paper cupcake liners. (About 18.)
Sift together the sugar, flour, cocoa, baking powder, baking soda, and salt into a large bowl. (Sifting will create a lighter/softer cupcake. If you don't have a sieve, whisk these ingredients well.)
Add the egg, milk, oil, and vanilla. Stir until incorporated.
Heat 1/2 cup of water in a large glass measuring cup in the microwave until boiling (1-2 minutes). Pour boiling water into batter and mix until fully incorporated. The texture of the batter should be consistent throughout. Batter will be thin, but shouldn't have watery spots.
Use a #24 scoop to fill prepared cupcake liners 2/3 full (just barely over halfway full). Do NOT overfill. Bake for 20-22 minutes. To test doneness -- a toothpick will come clean out of the center or the cake will spring back when touched.
*I like to use half regular cocoa and half dark cocoa for a richer and darker looking cupcake.*HIGH ALTITUDE: Only use 1/2 tsp baking powder (instead of 3/4 tsp) and add 2 Tbsp all-purpose flour. (Other ingredients stay the same.) Bake at 375˚F for 15-18 minutes.*Recipe altered from Hershey's