Add 1 tbsp of butter to a braiser or deep oven safe sauté pan set over medium heat. Add the vegetables and thyme and cook for 5 minutes. Season with salt and pepper.
1 cup diced carrots, ½ cabbage, 1 sweet or yellow onion, Salt and pepper, 2 tsp fresh thyme leaves
Add the beef, season with salt and pepper, and cook for 7 minutes or until almost cooked through.
1 pound ground beef
Make a well in the center of the pan and add 1 tbsp of butter, then mix in the flour and cook for 1 minute.
2 tbsp butter, 2 tbsp all-purpose flour
Mix in the tomato paste, Worcestershire, and broth.
2 tbsp tomato paste, 1 tbsp Worcestershire sauce, 2 cups beef broth
Bring the sauce to a boil, then reduce the heat to a simmer and cook for 15 to 20 minutes until the sauce thickens and becomes more of a gravy.
While the gravy is cooking, preheat the oven to 375°F.