Recommendations: Food with Minimal Stovetop Time, No Oven Available I'm not sure if this will still be too broad or vague, but here's my attempt at a rewrite.  Please feel free to close it if it is still too broad/vague. 

Friends overseas have a very minimal kitchen, and where they are, electricity is expensive, and they have a minimal income.  

Here is what they have - one single electric burner, a smaller-than-normal dorm fridge (which eats up most of their electric bill, evidently), a very sketchy 80s or 90s microwave that they are reluctant to use because of radiation leakage, one very small pot with a lid, two chef's knives and a couple of bowls. They have access to vegetables, a little meat and a few spices and sauces (salt, pepper, ginger, garlic, onions), but that's more or less it. 

They do not have access or easy access to the following - gas-powered or coal-powered products or devices; equipment or devices that are considered safe by most standards at home (they tried to get a hot water heater for coffee and it blew up in a month); ovens; toaster ovens; convection ovens; toasters; waffle irons; grills; George Forman grills; blenders; food processors; salad spinners, zesters, and other things we take for granted.  They also do not have access to processed foods like Oreos, soup mixes, canned broth, instant [fill-in-food-here] etc. Dairy and seafood are also out but those are due to allergies. They also do not have internet access, which is why I'm posting as I'm just learning to cook myself. I'm hoping to have answers for them next time I call.

I am looking for general food categories or formulas that they could make that have minimal time on the stovetop and will help with their bill.  Examples include stir-frys (cut up veg, add sauce, swish around, eat) or tortillas (eggs, add veggies and flavors, wait till eggs set, eat).  

Are there other "food formulas" like the two mentioned above - not specific recipes - that they could use?  I used the following criteria


5-10 minutes on the stovetop
easily adaptable - e.g. for stir-frys, they can use whatever veg their market has available
imparts a lot of flavor in a short time
is forgiving


I really am looking for suggestions, not recipes. What can my friends do to make meals under those circumstances?

Thank you for your patience and help.
From my own personal experience, the following are easily made with only a stove top and proper utensils:


Stir fried rice (you can boil the rice, and then fry). Boiling takes minimal time. I'm not sure if this is specifically what you meant with stir-fry, but I thought I would add it here.
Grilled meats (easily cooked on a pan with some olive oil or other garnish). Your time would be spent thawing (if its frozen), otherwise its seasoning + pan.
Stock-based soups and stews. The only problem you'll have is reducing it; but this varies from the specific stew stock you are using.


I would suggest the following, but I am just a "cook by necessity":

Breakfast:


French toast
Eggs


Lunch:


Stir-fried rice
Side of soup


Dinner:


Grilled steak fillet
Roast potatoes (you can roast them by cutting + covering the pan with foil)