Strawberry Shortbread Bars

Ingredients (8)

• 1½ cups (3 sticks) butter,
• 3/4 cup packed light brown sugar
• 3/4 cup granulated white sugar
• 2 teaspoons vanilla extract
• 3/4 teaspoon salt
• 3½ cups all purpose flour
• 1½ cups seedless strawberry jam
• powdered sugar