Original recipe makes 4 dozen

1 cup butter, softened
1 cup white sugar
1 cup packed brown sugar
2 eggs
2 teaspoons vanilla extract
3 cups all-purpose flour
1 teaspoon baking soda
2 teaspoons hot water
1/2 teaspoon salt
2 cups semisweet chocolate chips
1 cup chopped walnuts

Directions
http://i.imgur.com/hn4ctGC.jpg
Preheat oven to 350 degrees F (175 degrees C).
Cream together the butter, white sugar, and brown sugar until smooth. Beat in the eggs one at a time, then stir in the vanilla. Dissolve baking soda in hot water. Add to batter along with salt. Stir in flour, chocolate chips, and nuts. Drop by large spoonfuls onto ungreased pans.
Bake for about 10 minutes in the preheated oven, or until edges are nicely browned.

Will keep for two weeks in your ship's living quarters, and even longer if your cargo hold happens to be open to the vacuum of space.