- Preheat the oven to 375°F (190°C). 
- Slice the zucchinis in half lengthwise and scoop out the seeds to create the boat shape. 
- Drizzle the zucchini halves with olive oil, and season with salt and pepper. Place them on a baking sheet. 
- In a bowl, mix ricotta cheese, cooked spinach, garlic, oregano, basil, salt, and pepper. 
- Stuff the zucchini boats with the ricotta-spinach mixture. Optionally top with mozzarella cheese. 
- Bake for 20-25 minutes, or until the zucchini is tender and the cheese is melted and golden. 
- Let rest for 5 minutes before serving.