Creating Chicken Machboos can be a delightful experience when you follow these simple steps:

1. Rinse the Rice: Soak the basmati rice in water for about 30 minutes, then drain.
2. Brown the Onions: In a large pot, heat the vegetable oil over medium heat. Add sliced onions and sauté until they turn golden brown.
3. Sauté Garlic and Spices: Add minced garlic, mustard seeds, cumin seeds, turmeric powder, and coriander powder. Stir for about 2 minutes until fragrant.
4. Cook the Chicken: Add the chicken pieces to the pot, browning them on all sides for around 5-7 minutes.
5. Add Tomatoes and Chilies: Stir in the chopped tomatoes and green chilies, cooking until the tomatoes become soft.
6. Pour in Chicken Broth: Add the chicken broth, cinnamon stick, cardamom pods, and bay leaves. Season with salt to taste. Bring the mixture to a boil.
7. Simmer: Lower the heat, cover the pot, and let it simmer for about 30 minutes or until the chicken is cooked through.
8. Remove the Chicken: Take the chicken out of the pot and set it aside. Keep the broth for the rice.
9. Cook the Rice: Add the soaked and drained rice to the pot, mix gently, and let it cook in the broth. Bring to a gentle boil, then cover and reduce heat to low. Cook for about 20-25 minutes until the rice is tender and the liquid is absorbed.
10. Re-add the Chicken: Once the rice is done, place the chicken pieces back on top of the rice. Cover the pot for another 5 minutes, allowing the flavors to meld.
11. Garnish: Fluff the rice carefully, then garnish with fresh cilantro and lemon wedges.

By following these steps, you will create an aromatic and delicious Chicken Machboos that is sure to be a hit at your next meal!