Chocolate Marshmallow Cookies

1 C butter, softened
1 C sugar
1 C packed brown sugar
2 eggs
2 t vanilla
3 C flour
2/3 C cocoa
1/2 t baking soda
2 c semi-sweet chocolate chips
2 c miniature marshmallows, frozen

In a large mixing bowl, cream butter and sugars until light and fluffy. Add eggs, one at a time, beating well after each addition. Beat in vanilla. Combine flour, cocoa and baking soda; gradually add to creamed mixture. Stir in chocolate chips. Roll into balls. Press 2 to 3 frozen marshmallows into each ball; reshape.

Place on ungreased cookie sheet. Bake at 400 degrees for 8 - 10 minutes or until set. Cool 5 minutes before removing to wire racks to cool.