In a large mixing bowl, blend the creamy peanut butter and melted salted butter until smooth and well combined using a handheld mixer or a sturdy rubber spatula.

Gently stir in the Rice Krispies cereal until evenly coated with the peanut butter mixture.

Add the powdered sugar and mix thoroughly to form a firm, cohesive mixture.

Line a cookie sheet with parchment or wax paper.

Using a tablespoon, scoop out portions of the peanut butter mixture and roll them into balls about the size of a walnut.

Place the balls onto the lined cookie sheet and refrigerate for at least 30 minutes until firm.

Melt the chocolate in a microwave-safe bowl in 30-second intervals, stirring between each interval until completely smooth.

Dip each peanut butter ball into the melted chocolate to fully coat it.

Place the coated balls back onto the lined baking sheet and refrigerate for 15-20 minutes or until the chocolate is set.