A few thoughts:
best standard dessert - lemon meringue pie.
best unusual dessert that is never made anymore- chocolate eclair - to DIE for. OMG. The crew made these at every store opening. I don't know when the crew died, but when that happened, part of Luby's died.
When a store would open it was an honor to be asked to work the opening. After about two years working, I finally made the list. More exciting to be able to work the first two weeks when the first team crew was still there, so I could eat an eclair.
Best main entree done with left over food - Soft beef tacos with Tampico sauce - served in flour tortillas- Wow! the tampico sauce itself is like candy to me.
best standard veggie/starch when made correctly - mashed potatoes - US #1 potatoes, real butter, whole milk, potatoes drained completely before whipping, salt and pepper, no white pepper.
best unusual veggie, and this one made a ton of money---Individual Italian eggplant. Depending upon customers, should have been on the counter every day at most locations.
Peel eggplant, slice it, soak in saltwater overnight, bread it, bake it, mozzarella or provolone cheese on top, put in pan on top of the Italian sauce made by the first cook. Back in the oven one more time to melt the cheese.