French Onion Pot Roast

Bahan-bahan (6 porsi)

• 1 tablespoon olive oil
• 3 to 4 pounds beef chuck roast
• 1 teaspoon salt
• ½ teaspoon black pepper
• 3 tablespoons butter
• 3 large yellow onions (sliced ¼-inch thick, more if desired, *see notes)
• 4 cloves garlic (minced)
• ⅓ cup dry white wine
• 1¼ cups beef stock (or beef broth)
• 1½ tablespoons Worcestershire sauce
• 1 beef bouillon cube (crumbled)
• 1 bay leaf
• 1 teaspoon dried thyme leaves
• 3 tablespoons cornstarch (see note)