Ingredients  

1. 1 1/2 cups all purpose flour
2. 1/2 cup unsweetened cocoa powder
3. 1/2 cup granulated white sugar
4. 1 1/2 teaspoons baking powder
5. 1 teaspoon baking soda
6. 1/2 teaspoon kosher salt
7. 3/4 cup milk
8. 1/3 cup vegetable oil or canola oil
9. 1 large egg, beaten
10. 1/2 cup chocolate chips or chunks ,you can use dark chocolate chips too

Instructions 

1. Preheat the oven to 400° F. Grease or add paper liners to a regular (12) or mini (24) muffin tin.
2. In a medium bowl, sift flour, cocoa powder, sugar, baking powder, baking soda, and salt.
3. In a large bowl, whisk together the milk, oil, and the egg. Add the dry ingredients and stir just until combined. Stir in the chocolate chips.
4. Fill the muffin cups 2/3 full.
5. Bake 18 – 22 minutes (8-10 minutes for mini muffins), or until a wooden pick inserted into the center comes out clean.