Super Gooey Chocolate Drops

These were featured on Food Network's 12 Days of Cookies and Tommy loves these. I haven't made them since Christmas so I don't have a picture, so I just uploaded their stock picture.

What you need:
1/2 cup (1 stick) unsalted butter
4 ounces unsweetened chocolate, chopped
4 ounces semisweet chocolate, chopped
1 cup packed light brown sugar
1 1/2 cups granulated sugar
1 teaspoon pure vanilla extract
4 large eggs
2 tablespoons buttermilk
1 cup all-purpose flour
1/2 cup natural cocoa powder, such as Hershey's or Scharffen Berger
1 teaspoon ground cinnamon
1/2 teaspoon salt
11 ounces (1 bag) semisweet chocolate chunks
1 cup dried cherries. optional (I don't use this)

What you need to do:
Position racks in the lower and upper third of the oven and preheat to 325 degrees F. Line 3 baking sheets with parchment or silicone mats. (If you don't have 3 pans, simply cool the pan between batches.) Put the butter and the unsweetened and semisweet chocolates in a medium microwave-safe bowl. Heat at 75 percent power in the microwave until soft, about 2 minutes. Stir and heat again until melted, up to 2 minutes more. (Alternatively, put the chocolates and butter in a heatproof bowl. Bring a saucepan filled with an inch or so of water to a very slow simmer; set the bowl over, but not touching the water, and stir occasionally until melted and smooth.)

Stir the light brown and granulated sugars and vanilla into the chocolate mixture with a wooden spoon. Add the eggs and buttermilk and beat vigorously until thick and glossy. In another bowl, whisk the flour, cocoa, cinnamon and salt together. Add the dry ingredients to the wet and stir until just mixed. Stir in chocolate chunks and dried cherries, if using.

Drop the batter in heaping tablespoons onto baking sheets--a small ice cream scoop is ideal for this. Space the cookies about 2-inches apart. Bake until the cookies set but are soft and fudgy on the inside, 12 to 15 minutes (I always go on the low end of the baking time, I'd check them at 10 minute). Cool cookies on the baking sheet for 5 minutes, then transfer to a rack to cool completely. Serve. Store cookies in a tightly sealed container at room temperature for up to a week.