INGREDIENTS
Nonstick cooking spray
1
cup/225 grams unsalted butter (2 sticks), at room temperature
1 2/3
cups/215 grams all-purpose flour, plus more for dusting the pan
2/3
cup/145 grams light brown sugar
1/2
cup/100 grams granulated sugar
4
large eggs, at room temperature
1 1/4 tsp
baking powder
1/2 tsp
fine sea salt
1/2
cup/120 milliliters Irish cream
1 1/4
cups/155 grams confectioners’ sugar
3 tbsp
Irish cream, plus more as needed