Step 1 of 9
Chocolate Pound Cake
Preheat the oven to 350°F.
Step 2 of 9
Chocolate Pound Cake
Spray a 9x5-inch loaf pan liberally with nonstick cooking spray. Set aside.
Step 3 of 9
Chocolate Pound Cake
Place the butter, sugar, and vanilla extract in a large mixing bowl. Using a hand mixer or a stand mixer fitted with a paddle attachment, cream the ingredients together on medium speed until pale and fluffy, 3-4 minutes. Add the eggs one at a time, beating for 15-20 seconds after each egg has been added, scraping down the sides of the bowl as needed, until the mixture is combined. Add the sour cream and mix to combine well.
Step 4 of 9
Chocolate Pound Cake
Sift the flour, cocoa powder, baking powder, and salt into the bowl. Beat the mixture on low, scraping down the sides of the bowl as needed, until it becomes a smooth, thick batter. Add the chocolate chips and mix until they are distributed, about 15 seconds.
Step 5 of 9
Chocolate Pound Cake
Transfer the batter to the prepared loaf pan.
Step 6 of 9
Chocolate Pound Cake
Bake the cake on middle rack of oven until a toothpick inserted in the center comes out clean, 60-75 minutes.
Step 7 of 9
Chocolate Pound Cake
Check to see that cake is done. Remove from oven or add time as needed.
Step 8 of 9
Chocolate Pound Cake
Allow the cake to cool in the pan for 15-20 minutes. To release, run a butter knife between the edge of the cake and the pan. Turn the cake out onto a large plate.
Step 9 of 9
Chocolate Pound Cake
Allow the cake to cool for 1-2 hours before slicing and serving.