Step 1

Preheat oven to 425F and line a muffin tin with papers.

Step 2

Sift the flour, cocoa powder, baking soda, baking powder, salt, and sugar into a large bowl. Whisk together and set aside.

Step 3

In a separate bowl combine the eggs, vanilla, vegetable oil, sour cream, and milk then whisk together.

Step 4

Set aside about 1/3 cup of the chocolate chips for the muffin tops.

Step 5

Pour the wet into the dry and fold together using a spatula, mixing until almost combined. Sprinkle in the remaining chocolate chips and mix until the batter is just combined and the chocolate chips have been distributed.

Step 6

Fill the muffin papers to the top and sprinkle with the reserved chocolate chips. Bake at 425F for 6 minutes then reduce to 350F and continue baking for about 14 minutes or until the centers are set, a toothpick or skewer inserted in the center will come out clean.