Rinse Barley – Rinse the barley under cold water and drain.
Sauté Vegetables – Heat olive oil in a large pot. Add onion, carrots, and celery. Cook for 5 minutes until softened.
Add Garlic & Spices – Stir in garlic, thyme, salt, and pepper. Cook for 1 minute until fragrant.
Add Barley & Liquids – Add the drained barley, vegetable broth, diced tomatoes, and bay leaf. Stir well.
Simmer – Bring to a boil, then reduce heat to low. Cover and simmer for 40-45 minutes until barley is tender.
Adjust Seasoning – Taste and add more salt or pepper if needed.
Serve – Remove the bay leaf. Ladle into bowls and garnish with fresh parsley.