My girls always help me make these. Simple.
1/2 cup butter, softened
1/2 cup brown sugar
1/2 cup white sugar
1 egg
1 Tb vanilla extract
1 tsp baking soda
1 tsp salt
1 cup flour
2/3 cup dark chocolate chips

Mix the butter and sugar until blended well. Add egg and vanilla and mix again. Add baking soda and salt and mix again. Mix in flour and then chocolate chips. Drop spoonfuls of dough onto a baking sheet lined oven tray and bake at 170 C (325 F) for 10-12 minutes, and then let cool. Dip in a cold glass of milk and enjoy!