Do yourself a favor and Youtube DAVE CANTERBURY of the PATHFINDER WILDERNESS SURVIVAL SCHOOL. He does a lot of "bushcraft cooking" and you will be amazed at the number of dishes you can create with simple ingredients like flour, salt, sugar, corn meal, and basic meats, rice, and oatmeal. His flatbreads are particularly good watches. I use his recipes a lot in everyday cooking as well as backpacking.
Cooking with Emmie is another good channel to watch for easy and cheap 3 or 4-ingredient meals.