Actually your menu sounds heavenly compared to what my mom used to make us.
Breakfast: toast or cereal and we had to make it ourselves.
Lunch: a jelly sandwich (no peanut butter) every day
Dinner: burned chicken or spaghetti with powdered sauce.
My mom never put a vegetable in front of me. I used to wonder what the green and red stuff was in my friend's sandwiches. Turns out it was lettuce and tomato.
My advice for you is to learn how to cook and offer to do some cooking for your family. Once they get a taste of some good food, they will be inspired to get more creative and allow you to buy better ingredients. I started cooking elaborate meals for my family when I was in college. Everyone was happy and I learned how to cook in the process.
Maybe this is your chance to learn something.
