The Menendez Brothers shall be partaking in some Christmas classics for dinner tomorrow … in what might be there final December 25 behind bars.

As you recognize … Erik and Lyle Menendez are locked up in Rihcard J. Donovan Correctional Facility for the 1989 homicide of their mother and father — although the Los Angeles D.A.’s Workplace is trying into possibly supporting resentencing them.

Nevertheless, their listening to is not till the tip of January … so tomorrow, they’re nonetheless spending Christmas incarcerated — and TMZ now is aware of how they’re going to mark the day.

A supply within the California Division of Corrections tells TMZ … like everybody within the Menendez Brothers’ pod, Erik and Lyle can have a particular dinner of turkey, pie, salad, corn and chocolate milk.

The chocolate milk is an enormous deal BTW … ‘trigger we’re instructed inmates solely get it annually — so, it is a very particular deal with.

The group will play tournaments of the cardboard sport pinochle … and, there shall be non-religious companies and visits organized by exterior teams.

Nevertheless, one massive custom will not be taking place behind bars it appears … with our supply saying there will not be any exchanging of presents.