Salisbury Steak and Potato Skillet

INGREDIENTS

• 2 tablespoons olive oil
• 1 lb ground beef
• 1 white onion, halved and sliced
• 4-6 medium Yukon Gold Potatoes
• 3 cups beef broth, divided
• 2 tablespoons ketchup
• 4 teaspoons Worcestershire sauce, divided
• 1 teaspoon garlic powder, divided
• 1/4 teaspoon dried thyme
• 3 tablespoons cornstarch
• Kosher salt and freshly ground black pepper, to taste