Casseroles like lasagna, baked ziti, and enchilada pasta bakes are inexpensive to make with pasta, sauce, cheese, and veggies already on hand.
Add ground beef/turkey if needed.
Try bean-based soups like chili, lentil, split pea, or vegetable.
Serve with corn bread, rolls, or even grilled cheese sandwiches for dipping.
Cook one dish meals like jambalaya, stir fry, curry, or gumbo in a dutch oven or large pot.
Serve over rice to feed a crowd. Leftovers are easy for lunches too.
Homemade pizza on a whole wheat crust or flatbread is fun for kids and cheaper than take out.
Ground meat or beans crumbled and warmed up with taco seasoning served with all the toppings provides a fast dinner solution.