Line up your jars (or cups).
Have all your ingredients ready to go.
Layer jars as follows: cake crumbles, peanut butter cheesecake filling, ganache, crushed peanuts, and chopped Reeses’s peanut butter candies.
Start by adding the cake crumbles to the bottom of each jar.
Next, add peanut butter cheesecake filling. Fill a Ziploc sandwich bag with the peanut butter filling and cut one corner off. Squeeze in the filling on top of the cake crumbles then use a spoon to press the mixture down as evenly as possible.
If the inside sides of the jar get a little messy, this is fine. However, if it bothers you, dampen a very small piece of paper towel, wrap it around your finger, and wipe the inside of the jar as best you can.
Next, add the ganache with a small narrow spoon. The ganache should stay below the narrower top of the jar. This will ensure you have room for crushed peanuts and candies before twisting the lids on.
Sprinkle on your crushed peanuts and chopped Reeses’s candies.
Twist on the lids. Refrigerate until ready to serve.