Sugar Cookies with Lemon Curd

Cookies

• 4 oz sugar
• 7 oz unsalted butter, cut into pieces, room temperature
• 13 oz all-purpose flour, plus extra to dust
• 1 large egg
• 1 tsp vanilla extract
• 1 pinch salt

Lemon Curd

• 4 oz sugar
• 2 ½ oz lemon juice
• 2 large eggs
• 2 egg yolks, from large eggs
• 3 oz unsalted butter, cut into pieces