Yes, you can freeze fried mushroom rice for up to 3 months. If freezing, place in the fridge until cool then cover and store in a sealed container or freezer-safe bag. Freezing it in individual servings is handy so you can pull them from the freezer for a quick meal. Frozen fried rice can be thawed in the microwave or overnight in the fridge. To reheat, stir fry on the stovetop until hot. You may need to add a little water or broth if it's dried out.