A good starter might be something like bruchetta. Get a bagette from the grocery store, chop it up, and top with a bit of red and green pepper, some onion and a little bit of cheese. Yummers!
Hmmm, what about chili for the main? If you could pick up some discount ground beef, kidney beans and tomatoes, it probably wouldn't cost a whole lot. Throw in some canned mushrooms and spices and you'd have a good meal. Plus, it can all go in the crockpot -- I'm sure someone here has a crockpot chili recipe! You could probably whip up a batch of cornbread to go with it or a salad.
For dessert, I'd have biscuits, strawberries and whipped cream and let them make their own strawberry shortcakes, and a big ol' pot of tea!