Dab meat dry and cut into strips. Heat oil in a pan. Fry the meat for 4-5 minutes. Season with salt, pepper and sweet paprika. Take out.
Wash the tomatoes and cut into thin slices. Cut cheese into slices. Mix mayonnaise and mustard. Season with lemon juice, salt and pepper. Wash the basil and remove the leaves.
Cut baguettes in half. Cut each half in, press them apart slightly and spread some mustard cream on them. Cover with cheese, tomatoes, meat and basil. Spread the rest of the mustard cream on top.