Preheat the oven:
Preheat your oven to 350°F (175°C). Line a muffin tin with cupcake liners to prepare for baking.
Mix dry ingredients:
In a medium mixing bowl, whisk together the cake flour, cocoa powder, baking soda, and salt. This will ensure an even distribution of the leavening agents.
Cream butter and sugar:
In a large bowl, using an electric mixer, cream together the softened butter and granulated sugar until light and fluffy. This should take about 3-4 minutes.
Add eggs and oil:
Beat in the vegetable oil until combined. Then, add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
Color the mixture:
Add a few drops of green gel food coloring to your wet ingredients. Mix until you achieve your desired shade of green.
Combine wet and dry ingredients:
