Double Lemon Glazed Cookies

Ingredients

• 1 teaspoon vanilla
• 1 1/2 cups powdered sugar
• 1 egg
• 3/4 cup sugar, plus a little extra for cookie tops
• 2-3 tablespoons fresh lemon juice
• 1 teaspoon fresh lemon juice
• 2 1/4 cups all-purpose flour
• 1/2 teaspoon salt
• 1 cup butter, softened
• 1/2 teaspoon baking powder
• 1 tablespoon lemon zest