Cut onion into rings. Wash the mushrooms and cut in half or quarters. Wash and quarter the tomatoes. Wash parsley, shake dry and chop finely
Fry the onion and mushrooms in 1/2 teaspoon hot oil for about 4 minutes while turning them over until golden brown. Braise the tomatoes briefly. Deglaze with stock and bring to the boil. thicken sauce and season to taste
Knead the fat and parsley (except for something to garnish). Spread on the baguette slices
Cut the fat edge of the steak several times. Dab the meat dry. Heat 1/2 tsp. oil in a coated pan. Fry the steak for 2-4 minutes on each side. Season. Serve with tomato and mushroom sauce and garnish with the remaining parsley. Add the baguette