lol, Jello must have been cheap then,(70’s for me, I was in diapers in the 60’s) we had jello for dessert once or twice a week (dessert certainly wasn’t an every day thing at our house)
Assuming things weren’t financially pinched (they sometimes were) mom had a thing about Sunday dinners, that was a day that you didn’t get to have dinner at a friend’s house, you had better be home for dinner, it was a family sit down meal, usually something like a roast beef, pork roast, a baked chicken, pot roast. It might be spaghetti with all the fixings or a haddock or cod fish fry. Mom made a terrific beer battered fish fry, clam fritters and a manhattan clam chowder. Fish was a less expensive healthy food back then iirc, not like today where ordinary fish is quite expensive.