You can eat for under $30 a week..
Frozen Pizza : I like market basket brand, its a Digorno and only costs $3.50, if not walmart has awesome prices
Mac n' Cheese w/ chopped up hot dogs: I'd reccomend 2-3 hotdogs per box of mac n cheese, if you have someone else eating add more dogs or another box of mac. $3 maybe
Hotdogs, buns, beans : again, super cheap and straight forward
Chicken Kiev/chicken and stuffing, chicken cordon bleu : they come frozen in 2 packs for like 2.50, super tasty and you just add like the lipton easy rice/noodles and a frozen veggie, your dinner again is under $4
Ramen is good but high in sodium, I personally pour out the water after cooking to reduce some of the sodium in the meal.
buy lots of store brand bread, milk, meat etc.. you save the premium price and usually they are the same.
Shop at a price chopper, sav-a-lot, Market basket etc. in my town grocery store prices can vary as much as 40% on some items.. $7 pizza at one place may be $5 at another.. shop around.. find out where is best in your area.. I usually only eat dinner at home but with a package of bagels and peanut butter for breakfast and dinners for the week I only spend $50 for myself and my GF this past sunday at the grocery store. we were bugeting $60 combined a week and we ended up stockpiling so much food after 2 months that we took 2 weeks off to use up what we built up.
hot dogs and mac and cheese is amazing lol. Also buy a ricer cooker, easy to use and you can make tons of meals with rice.
Things to buy that can be made in a microwave:
Ramen
Easy Mac
Hot Dogs
Pasta/Ricearoni
Hot pockets
frozen dinners
left-overs from home
Canned soup
pop corn
hot pretzels
if you live in an apartment and want to eat healthy:
http://www.menshealth.com/cda/contentlist.do?site=MensHealth&channel=nutrition&category=food.for.fitness&type=recipe