
Cut the steak into 1/2-inch cubes and pat dry. Brown in oil in a large pot over medium-high heat, 4-5 minutes, then remove to a plate.
Add diced onion, carrots, and celery to the pot and cook 5 minutes until softened.
Add cubed potatoes, tomatoes, broth, and thyme. Bring to a boil, then simmer 15 minutes until the potatoes are tender.
Stir in the frozen vegetables and the beef with its juices; simmer 5 minutes more, until the beef reaches 145°F. Rest 3 minutes off the heat. Season with salt and pepper and serve.
Photo: DinnerDrop