Often when hunting alone, I will have Stouffers lasagna or some other pasta dish for dinner. Can place the plastic bowl of lasagna in a covered pan of boiling water and heat for 20-30 minutes. Steaks, burgers, or polish sausage on the grill also work. While that is "cooking" is a good time to sit down and have a beer or glass of wine and some cheese and crackers. A piece of pie for dessert.

Breakfast is often a Danish, some OJ, and a piece of fruit. Sometimes I will have an egg/potato/sausage scramble already cooked and in a ziploc for heating in boiling water that will be used for coffee in the french press.

Mostly, anything to avoid making lotsa dirty pots & pans by cooking.