Peanut Butter and Jam Bars

Name: Peanut Butter and Jam Bars
Ingredients: For the Crust; 2 cups (10 ounces or 285 grams) all-purpose flour; 1 cup (7 ounces or 200 grams) packed light brown sugar; 3/4 teaspoon salt; 1/2 teaspoon baking powder; 1/4 teaspoon baking soda; 16 tablespoons (8 ounces or 225 grams) softened unsalted butter, plus more for greasing the pan; 1/3 cup (3 ounces or 85 grams) chunky peanut butter; For the Filling; 1 cup (9 ounces or 255 grams) chunky peanut butter; 8 tablespoons (4 ounces or 115 grams) unsalted butter, softened; 1/2 cup (2 ounces or 55 grams) confectioners’ sugar; 2 teaspoons vanilla extract; pinch salt; 2/3 cup (160 mL) black currant jam