Add spinach in batches until wilted. Drain and set aside. Preheat oven to 400 degrees. In a lightly oiled baking dish, spread ¾ cup tomato sauce, then add 3 lasagna noodles. Spread ⅓ ricotta over ...
The filling ... next to the lasagna noodles). Olive oil. A drizzle of olive oil on the cooked pasta shells prevents them from sticking together before stuffing. Ricotta cheese.