Rinse the rice and leave it in cold water for 30 minutes. Heat in a pan the olive oil and 1 tbsp butter and saute over low heat the onion, stirring about 4'-5 '. Remove it and add in the same oil all the spices. Cook over low heat, stirring 1'-2 '. Add the drained rice, salt and 550 ml water, cover the pot and simmer 10'-12 '. Remove from the heat, remove the cinnamon, add the 1 tablespoon butter and leave it covered another 5 '. Stirring with fork and serve it, garnished with the remaining fried onions.
Bon appetit!