I usually eat meals twice a day and snack ...well, often.
Use lots of canned beans, corn, tomatoes, some of the better soups- boxed and canned.
fresh meat/fish gets cooked for the next meal(s), frozen saved for the next day or so.
Often bake or fry more taters than one meal and brown/reheat them through the week
Breakfast- pretty consistent about having a morning meal -
oatmeal with cinnamon, honey, dried or fresh or frozen fruit
Eggs- fried, scrambled, on/with griddle toast, or fratata(sp?) with leeks, bacon(or bits), sausage, brussel sprouts, onion, tomato...whatever is leftover.
pancakes- with corn or fruit, sometimes buckwheat...add yogurt, honey, jam, peanut butter.
Fish cakes if I have left over fish and taters
other meals-
black beans and rice with tomato, garlic, cumin- yum
fish/beef, fried/baked/sweet taters...corn is my "go to" veg (I know- it's a grain) squash (summer and zucchini mostly- cause they're easy), grilled leeks/ brussel sprouts/ beets...string beans, peas-only when the're fresh
Shepherds pie- the lazy version- slice taters into cast pan with oil, garlic, add corn, onions, browned ground beef or sausage, can of mushroom soup -simmer til taters are done.
stir fry veggies
canned beans with toast, meat if I have it.
Tuna- sandwiches with onion, celery sprouts...or not. Tuna wiggle if I have milk (unlikely)
"baked" enchilada- a fav- black, refried beans, corn tortillas/taco shells/tortilla chips, salsa, onions, mushrooms, jalapenos, cooked beef/sausage/chicken layered and smothered in grated cheese in a covered cast pot, simmered till cheese melts
Snacks include
crackers often with cheese-most any kind, pepperoni/summer sausage, smoked oysters/clams, peanut butter
Clif bars
popcorn- Smartfood with cheddar or fresh popped in a frying pan.
chips
cashews
jerky
fruit- dry or fresh, granola, trail mix alone or with with yogurt, honey and wheat germ.
Haven't kept track of what it costs for my food- feed a dog and cat as well, and usually have paper products, litter, beer, and whatever in the cart too.