Heat olive oil in a large skillet over medium-high heat.
Add chopped onions and sauté until translucent.
Stir in minced garlic and cook for an additional minute.
Increase the heat and add beef pieces, searing until browned on all sides.
Pour in beef broth and Worcestershire sauce, stirring to combine.
Add thyme, salt, and pepper, bringing the mixture to a simmer.
Reduce heat to low, cover, and let simmer for 20 minutes.
If desired, mix cornstarch with a bit of water and stir into the sauce to thicken.
Continue cooking for another 5 minutes until the sauce reaches your preferred consistency.
Serve hot, garnished with fresh herbs.