INGREDIENTS
3/4 cup
(12 Tbsp; 175g) unsalted butter
1
and 1/4 cups (250g) granulated sugar
3
large eggs
1 tsp
pure vanilla extract
1 cup
all-purpose flour (spoon & leveled)
1/2 tsp
salt
optional: 1/2 teaspoon espresso powder
2 cups
confectioners' sugar
2 tbsp
reduced Guinness (from step 1)
1 tsp
espresso powder
1/2 tsp
vanilla extract
1/4 tsp
salt