You are very lucky to have a job. I have been out of work since January of "09 so I know what you are going through. Two very cheap and quick dinners are:
Quesadillas. Heat up a skillet and spray it Pam or butter, lay a tortilla (We use whole wheat) sprinkle with grated cheese. Top with another tortilla and heat until the bottom tortilla is toasty and carefully turn over. Continue to cook until the second tortilla is toasty. Slice like a pizza. If I have leftover chicken or browned hamburger I will add it to the cheese. Serve with salsa or pico de gallo. You can add a salad or tomato soup.
Cowboy Beans.
Brown one pound of hamburger (or turkey) with one small onion, one green pepper, two sticks of celery and some garlic
When the hamburger is no longer pink Add four large potatoes . Add four cups of water or broth and simmer for about 20 minutes or until potatoes are done. Now you get to use whatever is in the cupboard. (Like the cowboys used to have to do) A few minutes before serving, add at least one can of beans, corn or mixed vegetables whatever sounds good. You can add more water to make a soup or simmer until thicker like a stew. Serve with biscuits. Kids love it.