totally chocolate chocolate chip cookies

this is from nigella lawson. i love her easy, relaxed way of taking on a recipe.

4 oz semisweet chocolate
1 cup flour
1/4 cup unsweetened cocoa, sifted
1 tsp baking soda
1/2 tsp salt
1/2 cup (1 stick) butter
1/2 cup light brown sugar
1/4 cup granulated sugar
1 tsp pure vanilla extract
1 egg, cold from the fridge
2 cups semisweet chocolate morsels or dark chocolate chips

preheat oven to 325. melt the 4 oz of chocolate.
measure the flour, cocoa, baking soda, and salt into a bowl.
cream the butter and two sugars in another bowl.
add the melted chocolate and mix together.
beat in the vanilla extract and cold egg, and then mix in the dry ingredients. finally stir in the chocolate chips.
scoop out 1/4 cup-sized mounds, and place on a lined baking sheet about 2 1/2 inches apart. do not flatten them.
bake for 18 min, testing with a cake tester to make sure they come out semi-clean and not wet with cake batter. if you pierce a chocolate chip, try again.
leave to cool on the baking sheet for 4-5 min, then transfer to a cooling rack to harden as they cool.