Hi working mom/wife, I really understand where your coming from
, there are only two of us, but we're on the road a lot and often eat out because of that, to tired or no time to cook, I try to buy & stock when items are on sale, and yes, I over buy.
.Here is a list: flour,cornmeal,sugar,pancake mix, bisquick,hot & cold cereals,syrup,honey,quick cook/instant rice,several shapes of pasta,beans dry & canned ( I try to keep on hand 2 cans of several kinds),spaghetti sauce, tomatoes(1 can eeach,sauce,whole,chopped,with green chilis,and stewed), creamed soups ( 1 each flavor),canned vegs( 2 mixed & 2 each, corn,peas,g.beans and what ever your family likes), canned fruit.( an assortment). Freezer: Ground beef, roasts ( beef & pork),steaks, pork chops, bacon, sausage, chicken (cut up or whole-for roasting),and fish. I like frozen vegs. I often buy frozen mixed peppers & onions, you can add them to anything that calls for them. Spices that you usually use. That's just a start, lots of luck