Melt the butter and olive oil in a large pot over medium heat, add the onions, and sauté for 3-5 minutes until they become translucent.
Stir in the garlic and cook for 30 seconds, until fragrant.
Add the pieces of chuck roast to the pot and brown on all sides, about 5-7 minutes.
Add the soy sauce, beef broth, thyme, bay leaf, Worcestershire sauce, and black pepper. Mix well to combine and bring to a boil. Reduce the heat to low, cover, and simmer for 5 minutes.
Whisk together the half and half and cornstarch in a small bowl to make a slurry.
Gradually stir in the slurry mixture, and cook for an additional 5 minutes or until the broth thickens slightly.
While the sauce is thickening, cook the egg noodles in a large pot of salted boiling water according to the package instructions, until al dente. Drain the cooked noodles and add them to the beef and sauce mixture, stir well to coat the noodles with the sauce.
Garnish with fresh thyme if desired before serving.