Chocolate-Chunk Chocolate Cake

Directions

1. 1
   Preheat oven to 325F.
2. 2
   Butter 9-inch-diameter springform pan; dust with flour Stir 2 tablespoons water and coffee in small bowl until coffee dissolves; set aside.
3. 3
   sift flour, cocoa, baking powder and salt into medium bowl.
4. 4
   Using electric mixer, beat butter in large bowl until fluffy.
5. 5
   Gradually add 1 1/2 cups sugar, beating until well blended.
6. 6
   Beat in eggs, 1 at a time.
7. 7
   Add coffee mixture, sour cream and vanilla extract and beat to blend.
8. 8
   Stir in flour mixture.
9. 9
   Fold in half of chocolate pieces.Transfer batter to prepared pan.
10. 10
    Bake cake until tester inserted into center comes out clean, about 1 hour 10 minutes.
11. 11
    Transfer cake to rack; sprinkle remaining chocolate pieces over hoe cake.
12. 12
    Cool 10 minutes.
13. 13
    Cut around pan sides to loosen cake; release pan sides.
14. 14
    Cool cake completely.
15. 15
    Sift powdered sugar over cake.
16. 16
    Cut into wedges and serve.