Here's my 2 cents... We eat a lot of noodles with chili on top. We call it chili size (like Bobs Big Boy used to make.) Canned chili is pretty cheap, has meat & beans & is fast to make. If you can make up a big pot from scratch & freeze it it'll be even cheaper. If LG (Little Guy) doesn't like the chili give him noodles with butter.
I agree that you should forget about the hot dog buns & just use bread.
Put some bowls down where the kids can reach them. Have them pour their own cereal on Saturday & Sunday mornings so you can get 5 extra minutes of sleep. Tell them they need to help pour it out for LG.
They are old enough to make PB&J sandwiches themselves for lunch on Saturdays & Sundays. Again, tell them to make one for LG.
Seems like that leaves you needing 7 cheap, easy dinners. Theres nothing wrong with making the same things every week on the same nights, that way everyone knows what to expect & you wont have to think too much about it.
(example...)
Monday - Meatloaf & instant mashed potatoes (with butter, forget the gravy.)
Tuesday - Tacos or rice & beans.
Wednesday - Hot dogs with bread & apple sauce.
Thursday - Spaghetti with or without meat.
Friday - Frozen TV dinner or Frozen chicken pot pies.
Saturday - Chili & noodles.
Sunday - Breakfast for dinner - Pancakes or scrambled eggs with toast.
(or even easier...)
Monday - Hot dogs
Tuesday - Frozen TV dinner
Wednesday - Spaghetti
Thursday - Hot dogs
Friday - Frozen TV dinner
Saturday - Spaghetti
Sunday - Meatloaf & applesauce
Popcorns probably cheaper & healthier than chips & makes a great before bed snack.
Last but not least Granny, if you feed those boys hot dogs every single night, THATS OK!!! They are safe with you & being cleaned, fed, educated & loved. Nothing else matters.