01 - Rinse the pearl barley under cold water and drain thoroughly.
02 - Heat olive oil and 1 tablespoon of butter in a medium saucepan over medium heat. Add barley and toast, stirring frequently, until golden and aromatic, about 5 to 7 minutes.
03 - Add finely chopped onion to the saucepan and cook for 3 minutes until softened. Stir in minced garlic and thyme, cooking an additional minute.
04 - Pour in the vegetable broth, add salt and pepper, and bring to a boil.
05 - Reduce heat to low, cover, and simmer gently for 25 to 30 minutes until barley is tender and most liquid is absorbed.
06 - Remove from heat and let stand, covered, for 5 minutes. Stir in remaining 1 tablespoon butter and fluff barley with a fork.
07 - Sprinkle chopped fresh parsley over the barley before serving, if desired.