Making some assumptions (i.e. not too hot, and this is a Friday morning to Sunday afternoon type timeframe), I would go with the following:
Friday Lunch - I tend to graze while hiking vs. having a lunch, so various bars, snacks, gorp, fruit, and a sausage/pepperoni & cheese block will suffice.
Friday Dinner - Homemade chili, casseroles, beef stew, chicken & rice, etc.
For this, it's done at least a day ahead of time.
When making a meal at home, (something with a decent amout of sauce, proteins, veggies, and a starch), make an extra plate.
When you are done, cut into bite sizes, put it into a bowl and wrap it in plastic wrap.
Make sure the bowl is not full up (better to make two small meals vs. one big one, for reasons explained later).
Freeze until it's not too viscous (you may be able to skip this step).
Put contents into a vacuum sealer (what, you don't have one? You must get one!!)
Seal your meal(s) and freeze.
Upon packing, pack your meal with a few freezer bags in a flexible lunch bag.
At dinner time, boil a pot of water and toss your bag of food in the water (STILL IN THE BAG).
Reheat for about 10 minutes, could be 5, could be longer, depending on how big you made the bag (see above) and how hungry you are and can't wait.
Cut bag open, get utensil, and eat right out of the bag.
For cleanup, lick utensil clean and throw bag away.
*Stouffer's used to make boil-n-a-bag meals, which were perfect for this. They stopped/changed the details, so we started making our own. I once at lobster tail marinated over a bed of pasta while watching the sunset from a quiet little spot off the summit of West Bond.
Saturday AM - Egg beater omelets or sausage/hashbrowns (kept cold in a flexible lunch bag). If unable to keep cold, oatmeal/bagels grilled in a pan
Saturday Lunch - See Friday lunch
Saturday Dinner - Most likely, see Friday Dinner. I've been able to pull two nights with pre-made meals, but if really warm weather this doesn't fly (then it's a can-of-chicken-souped-up-ramen-noodle time)
Sunday Breakfast - Shake and pour pancakes