Homemade Shortbread Cookies (Gurabii)

Ingredients (8)

• 1 cup (227 grams) unsalted butter, at room temperature
• 1 tablespoon baking powder
• 2 egg yolks, at room temperature
• 1 teaspoon pure vanilla extract
• 3 tablespoons powdered sugar
• 2 1/2 cups all-purpose flour
• 1/2 ounce whisky
• powdered sugar, for dusting on top