To freeze place them in freezer bags. Use parchment paper between layers. Wrap sealed freezer bag in foil and place the whole thing in another freezer bag. You can store this for about 3 months in the freezer.
Reheat frozen bites in 375 degree oven for 12-15 minutes. I would not recommend reheating in the microwave, the crust will get soggy and the filling rubbery.