Weight Watchers-Friendly Mini Peanut Butter Pies

1 cup smooth peanut butter (28 points)
1 cup powdered sugar (0 points, assuming a sugar substitute like Swerve)
1 cup heavy cream (13 points)
1 teaspoon vanilla extract (0 points)
12 small pie crusts made from graham crackers (store-bought or homemade, approximately 2 points each, total 24 points)

Prepare Peanut Butter Mixture:
- In a big bowl, mix the peanut butter and powdered sugar until smooth.
Whip Cream:
- In another bowl, beat the heavy cream and vanilla extract until it forms stiff peaks. Be cautious not to overwhip.
Combine Mixtures:
- Carefully fold the whipped cream into the peanut butter mixture until just combined. Keep some air in the whipped cream to make the filling lighter.
Fill Crusts:
- Evenly distribute the filling into the small graham cracker crusts. Use a kitchen tool to flatten the surfaces.
Refrigerate:
- Put the pies in the fridge for at least 2 hours, or until the filling is firm.
Decorate:
- When ready to serve, optionally add chocolate shavings or small peanut butter cups for decoration.