In a large bowl, combine the 2 cups of peanut butter, ½ cup salted butter, and 2 teaspoons Vanilla extract until fully mixed.
Add the 2 cups of powdered sugar (gradually) to the mixture, mixing until smooth and creamy.
Fold in the Rice Krispies® cereal (3 ½ Cups), ensuring they are evenly distributed throughout the mixture.
Roll the mixture into small balls, approximately 1 inch in diameter.
In a microwave bowl, melt the chocolate chips and vegetable shortening in 30-second intervals, until smooth and fully melted.
Dip each of these balls into chocolate that is melted before, ensure it's fully dipped.
Now Reheat the chocolate if it’s getting cold or thick, then finish dipping the balls.
To make the chocolate hardened, let these balls at room temperature and store them in the refrigerator until ready to serve.