Before starting, remove the bone from the chest of chicken, and make thin slices.
In a simple pot, put the vegetable oil, the shopped onion, carrots, salt, black pepper, the bone of the chicken and the green olive and stir very well on a low heat for about 3 minutes.
Then put 3 glasses of water, and let it boil till the olives are cooked.
After that, in a pan put one tablespoon of butter and put the slices of chicken, salt, half teaspoon of black pepper, 2 cloves of garlic, 2 tablespoons of parsley and stir till the chicken get the color of gold.
After that put the mixture in the pot in to the pan with the chicken and let them boil for about 5 minutes.
When the Tagine is ready remove the bone and serve.