Make bread pudding?
Hub gets tuna salad on leftover buns. Or they get Turkey/ham on them. We use 2 most of the time. On the 4th we get Hamburgers, corn, chips, and 1 beer each. I got some of those 4 to the pack-marked-down burger buns, the other 2 will go with the rest of the pork roast I made Saturday when I shred the pork and use BBQ sauce.