I always take my wet fuel stove and fire it up.
It also depends how many days I am on the trail.
If your between sites to bed down for the night, crackers, cheese, salami and some water.
Sandwiches are like fine for day hikes. Bread gets crushed in the pack.
I also like tuna fish, so, I'll crack open a can, some cheese, crackers or a hunk of sourdough bread (not sliced) and feast.
If I fire up my stove on the trail, it's usually for easy stuff like noodles and I'll add some dehydrated meats and veggies. But on a trail, you will need a water source to clean up. Better to plan an easy cold meal.
-Cheers