Breakfast: usually some instant oatmeal and a hard boiled egg or two for some protein, banana bread with butter.
Snacks: homemade trail mix. I prefer dried cranberries and mixed raw nuts in about a 1:2 ratio. Most prepacked trailmix has too much sugar for me.
Lunch: Either more trail mix and a hard boiled egg or some type of freeze dried meal so I am able to stay out in the field.
Supper/Dinner: Grilled steaks, burgers, hotdogs. Side dishes of baked beans, fresh cut veggies and dip.
Dessert: Homemade cheesecake, apple pie, brownies, cookies.
This seemed to work pretty good for us (hunterdan, n77ea and myself) while Coue's hunting this year.
PM me if you want to know the logic behind the carb, protein and fat combinations.