Preheat the oven to 220°C on turbo mode.
Filling: Combine ricotta, olives, pumpkin seeds, cooked spinach, sumac, salt, and pepper. Mix well.
Assemble the Ravioli: Place 2 slices of zucchini in a cross pattern. Top with a tablespoon of filling, fold over to close, and place aside.
Tomato Sauce: Heat olive oil, sauté garlic, basil stems, and chili. Add passata, sugar, salt, and water. Boil, and cook for 5 minutes.
Arrange the ravioli in the pan, and top with olive oil and butter cubes.
Roast for 15 minutes, add cheese and bake for 5 more minutes until golden brown. Finish with basil and olive oil.
