Chocolate Snickerdoodles

Ingredients:
2 teaspoons ground cinnamon
1 1/2 cup sugar
1/2 cup butter, softened
1 teaspoon vanilla extract
2 eggs
2 cups flour
3/4 cup cocoa
1 teaspoon cream of tartar
1/2 teaspoon baking soda
1/4 teaspoon salt
2 tablespoons sugars

Directions:
Preheat oven to 400F. Combine sugar, butter, vanilla and eggs. Mix well. Stir in flour, cocoa, cream of tartar, baking soda and salt. Blend well. Shape dough into 1 inch balls. Combine 2 tablespoons sugar and 2 teaspoons ground cinnamon. Roll dough in sugar/cinnamon mixture and place 2 inches apart on ungreased baking sheets. Bake 8 to 10 minutes, or until set. Immediately remove from cookie sheets.