I do a lot of hiking so I am familiar with hiker meals that are relatively quick and use little fuel. The basic premise is to use a quick or no cook starch with dehydrated vegetables and meats. Most meals are that you heat a cup or two of water and pour it into your food. You then put your pot/cup into a "cosy" or wrap in a towel to keep it warm for 10 minutes or so.
If you look up "freezer bag meals" you can see some recipes and get some ideas to use. I know that dehydrating your own stuff is probably out, but fresh works too if you aren't backpacking it. Also many dehydrated vegs and sauces are available on the internet.
https://www.backpackingchef.com/ is also a good site.
The reason I mention this, is that you can make a lot of meal variations around minute rice, cous cous, instant potatoes, bulger, dehydrated refried beans, and quick pastas like angel hair or asian pastas (rice noodles etc). Add some seasonings and maybe some sauce or gravy, throw in some vegies and meat. Just about anything you want, and your meal can be done in just a few minutes. Also Fresh pasta cooks quicker than dry, but it does have to be actively boiled for a few minutes.
Near East has some nice cous cous flavors that are fun to experiment with. Also bulger dishes like tambouleh. They have quinoa too, but I don't remember if it is parboiled to be quick cooking.
Knorr Sides are also a quick cooking alternative that can be used as a meal base.
Another way to a quick meal is to slice your meats and vegetables thin for a quick stir fry.
You might also consider frozen convenience foods. Some can be thawed and quickly, cooked, heated, or toasted in a skillet.
I have even "cooked" frozen burritos and heated canned soup on the dash of my car. I just put what I am heating between the windshield and my reflector. Be careful not to over heat the canned soup!
You could also get a small stove top pressure cooker. You can do just about anything in it, in just few minutes of burn time.
I'll probably think of more later. Good luck and have fun exploring the grocery aisles.