Begin by adding chex cereal to a large mixing bowl. Crush the cereal until it's is a fine consistency. If desired, feel free to use a food processor to process the cereal into a finer consistency, but not necessary if you don't own one!

To the crushed cereal, add peanut butter, powdered sugar & vanilla. Mix everything together - either with a spatula, or your hands, or both - until fully combined. Mixture will be and should be thick!

Place your puppy chow truffle filling into the refrigerator for about 1 hour.

While the filling chills, melt chocolate either over a double boiler or in the microwave in 30 second increments, until fully melted. Let the chocolate cool slightly until it is not so hot, but still melted.

Once the truffle filling has chilled, scoop it into balls and roll in your hands to smooth it out.

Then, dip each puppy chow truffle into the melted chocolate, fully submerging it until it is completely coated. Once all truffles have been coated in chocolate, set each aside to let the chocolate cool and harden. This will take a couple of hours, depending if you let them cool at room temperature or in the fridge (see recipe notes above).

Once the chocolate has fully cooled and hardened back up, coat each in powdered sugar, and enjoy! Please please do not try to roll the truffles in powdered sugar until the chocolate has hardened back up.