Sprinkle the pot roast seasoning over the cube steaks to coat them all over.
Heat a cast iron skillet over medium-high heat. Drizzle in the olive oil and then carefully place the cube steaks in. Sear the steaks on either side for 2 minutes until they are browned.
Remove the steaks from the skillet and add the butter, onions, garlic, mushrooms, and thyme. Sauté for 5 - 8 minutes until they are cooked.
Once the vegetables are cooked sprinkle the flour over it all, then pour in the Worcestershire sauce and slowly add the half and half and let it bubble away, stirring as it goes. It will start to thicken up. You can taste the sauce and add salt and pepper as needed.
Add the seared cube steaks back into the sauce and cook for another 5 minutes.