Instructions

• Preheat oven to 350°F. Grease a 13×9-inch baking pan.
• In a large bowl, cream together 1 cup butter (room temperature) and 1 ½ cups granulated sugar until light and fluffy, about 2 minutes.
• Add 2 large eggs (room temperature), 1 teaspoon vanilla, and 2 cups creamy peanut butter. Mix until combined.
• Add 3 cups all-purpose flour and 1 teaspoon baking powder. Mix until a firm, evenly combined dough forms.
• Press about two‑thirds (2/3) of the dough evenly into the bottom of the prepared 13×9-inch pan, smoothing the surface with a spatula or your hands.
• Spread 1 ½ cups jam evenly over the dough layer.
• If using, sprinkle ⅔ cup coarsely chopped salted peanuts evenly over the jam.
• Drop the remaining dough over the jam by teaspoonfuls, spacing them so some jam remains visible.
• Bake in the preheated oven for 25–30 minutes, until the edges are golden and the topping is set.
• Remove from the oven and let cool completely in the pan on a wire rack.
• Dust with powdered sugar before slicing and serving.