Take a package of wheat/meat from the freezer and microwave it for 30 seconds so you can sprinkle it over the potatoes. (If you plan ahead, you can take it out to thaw earlier, or you can even cook your raw hamburger when you're preparing dinner - add some onions for extra flavor.)
Open a can of green beans, drain the liquid, and sprinkle on top of the meat.
This meets every definition of comfort food. Give it a try some day.
(If you want, you can easily vary the meat, vegetable, soup and cheese to fit what you have on hand. It's the potatoes that make it Shepherd's Pie.)