The 70's were my childhood (lots of good times!), too but unfortunately the food (most of it cooked by Mom) was not good. Sorry, Mom.
My Grandmother did the Jell-O with canned fruit cocktail mixed in. Not too bad, but after Jell-O made me throw up, I have never had it again.
Besides the 5 things my Mom could cook, I grew up on Spaghetti-Os, Campbell's soups, and baloney sandwiches. Grown-up parties (as opposed to kid's birthday parties) meant a tray full of velveeta and olives on toothpicks and potato chips and dip made from sour cream and onion-soup mix in a packet.
Breakfast wa almost always some sickeningly sweet cereal like Cocoa Pebbles, Trix, Cap'n Crunch, Boo-Berry, etc. with a Devil Dog afterwards, washed down with chocolate milk.
That's basically what I remember about the food in the 70s, but now we're getting off-topic.