From years of backpacking, I’ve experimented with various ways to cook Ramen noodles:

In the same aisle as the tuna fish, get a foil bag of shrimp. Boil a pack of ramen, drain, add the shrimp (rinse ’em first,) and dump in a
splash of cream and some parmesan cheese. With a bit of imagination,
enjoy your Shrimp-pasta alfredo that you made for about $2.50.

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Super fast, cheap, and easy BBQ chicken. Go to Sam’s Club and buy a
couple of their rotisserie chickens, which are huge, already cooked, and cost less than 5 bucks apiece. Cut them up, put the pieces on a baking sheet, slather them very generously with BBQ sauce, cover loosely with tinfoil. Put in oven at very low heat (about 190 degrees) for an hour or so, then a few minutes uncovered under the broiler for crisp. Perfecto!
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10) Barbecue chicken

Okay, this isn’t quick. But it’s cheap and good.

Take a cut up whole chicken, or just breasts, or just legs, depending on how much you want to spend. Soak in 5 cups of water, 1 cup of sugar, and 2 teaspoons of kosher salt overnight in the fridge. The next day, preheat the oven to 300 degrees and put the chicken parts on a cookie sheet or jelly roll pan. Brush with barbecue sauce on both sides then bake, skin side up, brushing with barbecue sauce and the pan juices every twenty minutes. It’ll take a little over two hours, but the skin will be richly infused with barbecue flavour, and there’s very little actual work involved.