Refrigerate and separate patties I make up several burger patties in advance with peppers, onions, and spices.

I use wax paper to separate them.

If I put them in the freezer they separate fine.  

If I just refrigerate they stick to the wax paper.  I don't want to coat the wax paper with oil.  

How can I refrigerate the patties so they will easily separate?
The soft fats from your hamburger are still 'sticky' at refrigerator temps, but once frozen are solid enough that they no longer cling to the wax paper.

I typically use either cling wrap or parchment paper and never have a problem with either when pulling the patties from the fridge.