INGREDIENTS
1
Egg yolk, large
1/2 cup
All-purpose flour, unbleached
1/4 tsp
Baking soda
1/4 cup
Brown sugar, light packed
1/4 cup
Granulated sugar
1/4 tsp
Salt
1/2 cup
Semi-sweet chocolate chips
1 tsp
Vanilla extract, pure store-bought or homemade
1/4 cup
Butter
1
Your favorite vanilla ice cream