Preheat the oven to 375°F (190°C).
In a pan, sauté the onions and garlic in olive oil until soft and aromatic.
Add crushed tomatoes, oregano, cinnamon, salt, and pepper.
Let the sauce simmer for about 10 minutes.
Place the beans into a baking dish, then pour the tomato sauce over them. Drizzle with more olive oil.
Bake for 40 minutes, stirring occasionally.
Once the beans are soft and the sauce is thickened, remove from the oven.
Garnish with fresh parsley.