Double Chocolate Chip Cookies

2 sticks butter
1 1/2 cups sugar
2 eggs
2 tsp vanilla
2 cups flour
2/3 cup cocoa
3/4 tsp baking soda
1/4 tsp salt
1 3/4 cups chocolate chips (1/2 regular chips, 1/2 white)
1/2 cup chopped nuts (optional)

Beat butter, sugar, eggs and vanilla until fluffy. Mix dry ingredients together and add. Mix in chips.

Drop by teaspoonfuls on a greased cookie sheet. Bake 8-10 minutes at 350 degrees.