In a medium size pot, heat olive oil at medium-high heat and sauté onions until soft.
Add all the remaining ingredients except zucchini, season with salt and pepper, cover the water and bring to a boil. Reduce heat to medium. Simmer for about 15 minutes.
After 15 minutes, add zucchini and simmer for another 15-20 minutes. The beans are ready once there is no water left and the beans are soft.
Enjoy with bread and feta cheese.
