These are some cookies that my Dad use to make..I loved them as a child. These work best when you have used the oven for something else all day and then put these in the oven after dinner.
2 egg whites (room temperature)
1 tsp. vanilla
2/3 cup sugar
1 cup chocolate chips
1 cup nuts (optional)
Recipe
Beat egg whites, add sugar a little at a time. Add vanilla, chocolate chips, and nuts.
Drop by a tsp. on a foil covered cookie sheet. Place in the oven (that you have already been using at a 350 degree temperature) and turn off the heat. Leave them in the oven overnight.