Olive oil
5 or 6 zucchini or summer squash, cut lengthwise into 1/4-inch-thick slices
3 cups ricotta cheese
1 cup grated Parmigiano cheese
2 Tbs fresh basil
1/3 cup unsalted butter
1/2 cup all-purpose flour
4 cups milk, warmed
1/4 tsp nutmeg
3/4 box of lasagna noodles
4-6 tomatoes, peeled, seeded and cubed
3 cups mozzarella cheese, shredded