INGREDIENTS
1
Egg yolk, large
2 1/2 cups
All-purpose flour
1/2 cup
Brown sugar, light
1 1/2 cups
Chocolate chips, semi-sweet mini
1
Chocolate to coat the insides of the cups, dark
1/3 cup
Granulated sugar
1/2 tsp
Salt
2 tsp
Vanilla extract, pure
1 cup
Butter, unsalted
oven-safe moulds, such as stainless steel shot glasses, rum baba moulds (tall & thin or short & wider), or a popover pan