I used a whole zucchini, peeled and sliced thinly lengthways in place of noodles.....layered with thinly sliced tomatoes and green pepper from the garden, cheddar cheese ( I didn't have any white cheese on hand), and a can of spaghetti sauce poured over all. Baked at 350, I'll report back tomorrow...
Cheese cost: approx 2.00
Spaghetti sauce: 1.00
This made enough for three meals for the three of us. We added a chopped veggie salad from the garden, and I plan to add cornbread to tomorrows menu.