For purposes of this exercise, I'm assuming a TSHTF setting without trips to the store, but with electricity for refrigeration/freezing.
For breakfast:
Fresh eggs. We raise our own chickens. I also like to mix up some peanut butter & syrup to go w/ the eggs for flavor - also holds me longer. To that end, I bought some seed peanuts to start my own crop. Once they are harvested, I'll run them thru my Country Living grain-mill using the bean & nut auger to make my own peanut butter. Coffee and/or milk. I have a sizeable section of coffee in my cabinets, prolly a year's worth or more. The milk would be fresh from the goats, out there by the chickens.
Or homemade biscuits.
Or oatmeal with various dehydrated fruit bits tossed in. Several fruit trees went into the ground this spring, and more are in pots.
Pancakes from whole wheat, like the bread.
For lunch:
Hot weather would likely be sandwiches on homemade bread made from flour we grind from whole wheat bought by the bucket. Dunno what the meat would be - we gots lots of tuna and canned ham in the cabinets, tho. Greens & other veggies will come from the garden.
Cooler weather would be soup/stew made from rabbit or goat or chicken - all of which we raise - or maybe beef from the deep-freeze or from a trade or maybe deer from the woods. We have about a year's supply of rice in stock and veggies will come from the garden. Red beans and rice, maybe - esp. with a spicy green tomato relish or homemade pepper sauce!
For supper:
A basic repeat of lunch, either left-overs if there were enough, "eternal soup" where you take what *is* left over and add enough to it to make a new meal, or a whole new meal of the same pattern. We also like to have "evening breakfast" where we eat a "traditional breakfast" for supper.
desserts:
Well, chocolate would disappear from the menu pretty quick, sadly. But things like cakes made with honey (from bees we are going to be getting SOON!) rather than "white sugar," pancakes with jellies, cornbread or biscuits w/ honey or syrup, home-grown fruits and "fruit-leathers" from the dehydrator, and the like would be common. (wait...they already are!)
We'd prolly eat a lot more beans and the like than we do now - fresh from the garden, that is, during the summers. Squash, okra, tomatoes, potatoes, and so on.
Sure, tho - we have about 6 months of our "regular" canned foods.