Keeping Leftovers: Leftovers can be kept in the fridge for 1 week, with the exception of highly perishables (fish, seafood, etc.) that should only be kept refrigerated for 2-3 days. 

Freezing Mashed Potatoes: Scoop cooled potatoes into a freezer bag in meal-sized proportions. Can be kept frozen for up to 6 months. **Tip- If you know you are going to have leftovers make your mashed potatoes with plenty of cream or butter to help with reheating.

Freezing Dinner Rolls: Place cooled rolls on aluminum foil, then tightly wrap and put in a freezer bag. Can be kept frozen up to 1 month before freezer burn starts.