Breakfast was almost always oatmeal, milk, and some kind of fruit.
Lunch was extremely often white sauce with leftovers chopped into it served over rice. Very easy to make, it's still one of my staples.
Dinner was usually meat, starch, two veg. The meat was variable, we ate everything, the starch was usually potatoes or rice but sometimes bread or pasta, the vegetables were usually steamed.
I still eat like this a lot.