Pour rice krispies into a large bowl and set aside
Place butter in a large saucepan and melt. Allow the butter to begin to brown, with small brown flakes at the bottom. Add the marshmallows, vanilla and salt and stir until melted, about 3 minutes
Pour the butter marshmallow mixture over the cereal, and then add melted peanut butter. Fold, but you don’t want to over mix as we still want thick swirls of peanut butter in the mix
Pour half of the rice krispies into the pan and gently pat down. Spread the jam evenly. Top with the remaining cereal and gently press down.