Heat the olive oil in a frying pan and add the beef steak and balsamic vinegar. Cook for 5 minutes, before flipping onto the other side and cooking for another 5 minutes, to your liking. When you flip the steak, also add the cherry tomatoes to the pan.
While this is cooking, in a seperate pan add the oil and garlic and saute for 1-2 minutes to golden.
Add the potato and cook for 8 minutes, to soften.
Next, add the silverbeet and zucchini and season with salt and pepper. Cook for 5-6 minutes.
Serve the balsamic beef and tomatoes with the sautéed greens.