Brown Butter Shortbread Bars (Ted Lasso Biscuits)

Bahan-bahan (18 porsi)

• 1 cup (227g) unsalted butter (plus 2 tablespoons water)
• 1 cup (120g) powdered sugar
• 3/4 teaspoon fine sea salt
• 1 1/2 teaspoons vanilla extract
• 2 cups (284g) all-purpose flour
• flaky sea salt