We do a lot of food prep in advance. I'll grill up several steaks (cooked on the rare side because heating them up will further cook them a bit), which are then cut up into strips and frozen. We will use that meat on nachos and burritos. We will fry up peppers and onions, and refrigerate them in tupperware containers. We also buy the pre-cooked bacon that can be just heated up in the microwave, and we will use canned chicken and canned tuna. Coffee purists won't like this, but we also pre-grind enough coffee for the trip.
We tend to keep our meals pretty simple. Typical daily menu:
Breakfast - ham/egg or bacon/egg sandwich (toasted bread)
Lunch - packed peanut butter and jelly sandwiches or tuna and crackers carried in the tailbags of our motorcycles
Snack - trail mix
Dinner - Nachos or burritos using the pre-prepped ingredients
For us the van is a basecamp... our day is spent out exploring on our motorcycles, and we actually spend little time in the van other than for sleeping. Anything we can do ahead of time to minimize cooking/cleaning/etc means more time spent doing what we love:
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