Salt and pepper the beef, add thyme, mix and leave for at least an hour. Then cut into slices for salad.
Beetroot cheese mousse. Cut off the top of the beets, add olive oil, salt, pepper and bake in the oven. After peeling, grating and punching in a blender, add cheese to improve the taste.
Peel the orange, cut into small segments. To prepare beet caviar, you need to take 2 small beets, peel and cut into small cubes and fry in vegetable oil, add garlic, pepper, sugar and tomato paste
Cut lettuce leaves. Add a little cream to the cremetto cheese and mix with a whisk.
To prepare the onion baguette, fry the onion. Mix with the dough, add butter and bake in the oven until cooked.
Mustard sauce. Add honey to Dijon mustard and mix until smooth, add vegetable oil and gorgonzola cheese and mix everything.
Put dressed salad on a plate, top with beetroot caviar, beetroot mousse, orange, season with mustard sauce. Arrange the roast beef slices on top of the thinly sliced onion baguette. Place the beetroot mousse on a plate next to it.