Don't tell my kiddos but sometimes after Jim and I put them to bed I whip up a small dessert for the two of us to share. This small-batch chocolate chip cookie recipe produces two large cookies, so we can indulge without the temptation to go back for more.
2 tablespoons butter (I use Kerrygold Salted Butter)
2 tablespoons dark brown sugar, firmly packed
1 tablespoon sugar
1/4 teaspoon vanilla extract
1 egg yolk