No Peek Cookies
["2 egg whites", "pinch of cream of tartar", "1 pkg. chocolate chips", "3/4 c. sugar", "1/2 tsp. vanilla", "food color (optional)"]
["Preheat oven to 350\u00b0 for 30 minutes.", "Beat egg whites stiff with cream of tartar.", "Slowly add sugar and vanilla.", "When stiff, fold in chocolate chips.", "Drop by 1/2 teaspoon onto foil-lined cookie sheet.", "Put all cookies in oven at the same time.", "Close the door and turn off the oven.", "Leave cookies in oven 8 hours or overnight."]
["egg whites", "cream of tartar", "chocolate chips", "sugar", "vanilla", "food color"]