Chocolate Peanut Butter Bars (no bake!)

Recipe from here

Ingredients
1/2 cup unsalted butter, melted
1/4 tsp salt
1 cup graham cracker crumbs (about 8 full sheet graham crackers)
2 cups confectioners’ sugar
1 cup + 2 Tablespoons creamy peanut butter, divided
1 cup semi-sweet chocolate chips

Instructions