Making these chocolate donuts is a straightforward process that results in scrumptious treats. Here’s how to do it:

1. Preheat Oven: Start by preheating your oven to 350°F (175°C). Grease a donut pan with non-stick spray or lightly brush it with oil.

2. Combine Dry Ingredients: In a mixing bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt until well combined.

3. Mix Wet Ingredients: In a separate bowl, whisk together the buttermilk, vegetable oil, egg, and vanilla extract until smooth.

4. Combine Mixtures: Gradually add the wet ingredients to the dry ingredients, mixing until just combined. Do not overmix!

5. Fold in Chocolate Chips: If you’re using chocolate chips, gently fold them into the batter for an extra chocolatey experience.

6. Fill Donut Pan: Using a piping bag or a spoon, carefully fill each cavity of the donut pan about 2/3 full with the batter.

7. Bake: Place the pan in the preheated oven and bake for 10-12 minutes or until a toothpick inserted into the center of a donut comes out clean.

8. Cool: Once baked, remove the pan from the oven and let the donuts cool in the pan for about 5 minutes. Then, gently transfer them to a wire rack to cool completely.

9. Glaze (optional): If you’d like, dip the cooled donuts in chocolate glaze or icing for an added touch of sweetness. Allow the glaze to set before serving.

10. Serve and Enjoy: Your chocolate donuts are now ready to be enjoyed!