Chocolate-Chocolate Chunk muffins

Happy Valentines Day!  Here's a delicious muffin from Dorie Greenspan's Baking cookbook.  The boys and I really liked these, they gave them a perfect 10, and I gave them a 9.  Yum!  The recipe made 12 muffins, and each muffin was 240 calories.  I had to add a little more butter milk, about 2 T more than the recipe called for, because my batter was too thick without it.

3/4 stick (6 T) unsalted butter
4 oz bittersweet chocolate, chopped
2 c all purpose flour
2/3 c sugar
1/3 c unsweetened cocoa powder, sifted
1 T baking powder
1/2 t baking soda
1/2 t salt
1 1/4 c buttermilk
1 large egg
1 t vanilla

Preheat the oven to 375.  Butter the muffin pan and place it on a cookie sheet.
Melt the butter and half the chopped chocolate in the microwave.  Set aside.
In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.  In a liquid measuring cup, whisk together the buttermilk, egg and vanilla.  Pour the melted chocolate and the buttermilk mixture into the dry ingredients, whisk gently to blend, not overmixing.  Add the rest of the chopped chocolate, then place the batter into the muffin cups.
Bake for about 20 minutes, then remove and cool for 5 minutes.  Serve.

These are a great sweet breakfast treat, and we'll have these again.