Preheat your oven to 300°F (150°C). Season the short ribs generously with salt and black pepper.

In a large oven-safe pot or Dutch oven, heat the olive oil over medium-high heat. Add the short ribs, searing them on all sides until browned. Remove the ribs and set aside.

In the same pot, add the chopped onion and cook until soft and translucent, about 5 minutes. Add the minced garlic and sauté for another minute until fragrant.

Pour in the beef broth, scraping up any browned bits from the bottom of the pot. Stir in the pomegranate juice, balsamic vinegar, and brown sugar, mixing well.

Return the short ribs to the pot and nestle them into the liquid. Add the fresh rosemary and thyme.

Bring the mixture to a simmer, then cover the pot with a lid and transfer it to the preheated oven. Braise for 3 to 4 hours, or until the ribs are tender and falling off the bone.

Once the ribs are cooked, remove them from the pot and keep warm. If you prefer a thicker sauce, mix cornstarch with a little cold water to create a slurry and stir it into the pot. Simmer the sauce on the stovetop until it thickens to your liking.

Plate the short ribs and drizzle the pomegranate and balsamic reduction over the top. Garnish with fresh pomegranate seeds and chopped parsley before serving.