Giant bean oven with feta cheese

Ingredients
1 large dry onion, in thin washers
1/2 kg of medium white beans, drizzled and drained
1 t of sweet sugar
1 clove of celery cut into pieces
1 carrot cut into slices
1 bunch of parsley (only the leaves), finely chopped
2 to 3 sprigs of fresh oregano (leaves only) or -1/2 cubed dry
1 fl. olive oil
juice from 1 lemon

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Method

We throw the first water, once our beans are boiled.
Heat 2-3 tablespoons of olive oil in a large pot with lid and sauté the onion for 2-3 minutes until it withers.
Add the beans, sugar, celery and carrot. Mix and add hot water to cover them.
Cover the pot with the lid and let the beans simmer for 1 hour until they are tender. (If the beans are not too boiling, we will continue to boil for a while, adding a little hot water).
Boil the fire, season with salt and pepper and pour the food with the rest of the olive oil. As soon as it starts to spoon and does not have a lot of juice, pour the lemon juice, sprinkle with plenty of parsley and oregano and serve.