I had the only Jewish grandmother (Dad's mom) who not only couldn't cook, but her chicken soup was more like dish water. Mom, being the youngest of 7 kids, was the baby and didn't learn to cook either. On the other hand, her pastries were so good, she could have started a business. She was the classic "what are you making for dinner? A reservation" type. I'm one of those kids that could be taken to a restaurant at 4 and didn't cause trouble. Learned to order off the menu as soon as I could read. Needless to say I started doing all the cooking at home around 12. Everyone was happier.
I don't use glass jars - the heavy duty freezer/microwave containers (hefty, etc) and freezer zip bags. I make up a couple gallons or so of chicken soup every so often (when I'm down to a single quart in the freezer), load up the containers, and into the freezer in the basement. Same for stew and spaghetti sauce, altho I've become fond of Rao's marinara. Costco has it on sale every so often, so I stock up. [Costco also has lox at $12/lb - not as good as the nova lox at the deli, but it's not $36/lb, either!] Did the same for Dad when he was still alive. When I visited, I'd make a batch of stew, put it in individual zip locks in the freezer for him to pop into the microwave. Of course when he spent the summers with me (to get out of Phoenix summers) it was rare that I cooked - he'd rather go out to dinner. Most of the time, nothing fancy, a local diner for example. Made me happy because I was working full time and really didn't want to start cooking when I got home. Weekends, I'd cook.
Chicken parm is one of my go-to's. I don't understand why people find it so difficult. Grab boneless thighs or breasts, pound a bit flat, dredge in leftover breadcrumbs with grated parm, pan fry then cover with sauce and mozz then pop into the oven for 5 min to let the mozz melt. Serve with crunchy garlic bread and a salad. Total - maybe 20 min? Chicken stroganoff - well, I'm not doing that very often due to the high fat content...I really love the sour cream and butter.
No, I don't keep Kosher except during Passover. As I keep reminding my rabbi, you just can't make a decent grilled ham & cheese on matzo. Not even rye matzo.