Costco-esque Chocolate Muffins

My verdict: Very tasty and chocolatey.  I haven't had a Costco muffin in a long time, so I can't vouch for it tasting like that... but I think it's very possible.  I made this to go with dinner one night, but I feel like it's almost too dessert-y for that.  I froze some of the leftovers so maybe I'll use them for an after-dinner snack one day.

2 1/4 cups all-purpose flour

1 1/2 cups sugar

3/4 cups cocoa powder

1 1/2 teaspoons baking soda

1/2 teaspoon salt

3 eggs

1 cup sour cream

1 cup milk (I used skim)

1/2 cup vegetable oil

1 teaspoon vanilla extract

1/2-1 cup chocolate chips

In a small bowl, remove two tablespoons of flour from the 2 1/4 cups (now 2 cups and 2 tablespoons remains) and mix with the chocolate chips. Set aside

In a mixing bowl, combine the remaining flour, sugar, cocoa powder, baking soda, and salt.

In a different bowl, whisk together the eggs, sour cream, milk, oil, and vanilla extract. Stir into dry ingredients just until moistened. Fold in chocolate chips/flour mixture.

Fill lined cupcake pans 2/3 full with batter.Bake at 325 degrees for 18-24 minutes. Muffins are done when a toothpick inserted comes out clean. Cool on wire racks. Dust with powdered sugar if desired.