INGREDIENTS
4 tbsp
unsalted butter, at room temperature
2 tbsp
shortening
1/4 cup
light brown sugar
3 tbsp
granulated sugar
1
large egg yolk
3/4 tsp
vanilla
1/2 cup
+ 2 tablespoons flour
1/8 tsp
fine salt
1/4 tsp
instant espresso powder
1/4 tsp
baking soda
1/4 tsp
baking powder
1/3 cup
semi-sweet chocolate chips