This recipe only makes six small cookies, which is
1 tablespoon butter (melted)
2 tablespoons brown sugar
1/4 teaspoon vanilla
1 egg yolk
1/4 cup all purpose flour
2 tablespoons chocolate chips
Mix everything and form into 1" balls, then flatten a little and put them on an UNgreased microwave safe plate. They don't spread much when they cook, so just put them an inch or so apart.
Microwave on high for 45-55 seconds (my microwave took 50 seconds). Now is the hard part......let them cool for a couple of minutes....then enjoy!!
NOTE: Do not be tempted to add any baking soda to this recipe.