In a large bowl, mix together peanut butter and butter until smooth.

Add powdered sugar and mix again.

Add in crushed Rice Krispies cereal and stir well to combine.

Roll the peanut butter mixture into 1 inch balls and lay them on a cookie sheet covered with wax paper.

Melt your chocolate in the microwave, according to the directions on the package.

Dip each ball into the melted chocolate to coat.

Pick them up with a fork to let the excess chocolate drip off.

Place onto the wax paper and immediately add sprinkles.

Let the finished peanut butter balls to chill in the fridge for about an hour to let the chocolate set.