Chicken Biryani (Easy one pot recipe)

Ingredients
1/2 cup of oil or ghee
2.2 pounds of chicken
2 onions
1/2 can of crushed tomatoes
1 cup of yogurt
Potatoes. (Optional )
2 tbsp of Biryani masala.
1.5 tbsp Ginger paste
1.5 tbsp Garlic paste
2 Bay leaves
1 teaspoon of tomato paste
3 cups of rice
5 cups of water
Garnish
Chopped coriander leaves
Chopped mint leaves
Fried onions