Chocolate Shortbread Cookies

I used these to make Phi Mu cookies for Danielle's GGLittle. This recipe worked pretty well with cookie cutters.

ingredients
2 C confectioner's sugar
1 C unsweetened cocoa powder
3 tsp baking soda
3 C flour
1/2 tsp salt
1.5 C butter, chilled and cubed
1 tsp vanilla extract
2 eggs
1 C chopped semisweet chocolate

directions

1. Preheat oven to 350 degrees.
2. In a large bowl, combine confectioner's sugar, cocoa, baking soda, flour, and salt until well blended.
3. Add butter, eggs, and vanilla until well mixed and stiff dough forms.
4. Fold in chocolate pieces.
5. Chill dough for 10 minutes.
6. On floured surface, roll out dough to desired thickness and cut into shapes.
7. Bake cookies for 8-10 minutes on ungreased baking sheet.
8. Enjoy!