Chocolate Cookies with Mint (or peanut butter) Chips

1 ¼ c butter
2 c sugar
2 eggs
2 tsp vanilla
1 tsp baking soda
½ tsp salt
¾ c cocoa
2 c flour

1 pkg mint or peanut butter chips

Cream butter and sugar, add eggs. Mix in all other ingredients.
Bake 350' for 9 minutes.