Cut the beef chuck steak into bite-sized pieces and marinate with olive oil, salt, and pepper.

Blanch the cherry tomatoes in boiling water, peel them, and cut them into similar-sized pieces as the beef.

Slice the cucumber diagonally and dice the bell pepper into small cubes.

Prepare the dressing by mixing balsamic vinegar, olive oil, salt, pepper, sugar, and herb powder. Add sliced red onion and mix well.

Heat a pan and cook the marinated beef until browned and cooked through.

Combine the vegetables, cooked beef, and bread rusk in a serving bowl.