A really good baked pasta dish, with veggies in it.
Used ridged penne. Or instead of penne, any other largish, shaped pasta with ridges to catch and hold the sauce (i.e. not macaroni or spaghetti.) 1/4 pound (100g) of grated cheddar will equal about 1 cup grated. 3/4 pound penne is about 4 cups. For the tinned tuna, use either a tin that is 200g / 7 oz before draining, or 2 tins that are 170g / 6 oz before draining. (Yes, you'll end up with more tuna if you go the two-tin route, but you won't get any complaints.) Optional: just before sprinkling the cheddar cheese over top, arrange a few tomato slices on top the pasta in the baking dish.