Cut the pork fillet into 12 pieces, season and wrap with bacon, finely chop the onions and place in a baking dish that has been well buttered. Spread the meat on top and sprinkle with plenty of paprika powder. Cover each piece of fillet with a flake of butter and place the pan in the oven. Baking time: approx. 20 minutes at 250 ° C. After 20 minutes, pour the cream over it (if you like, add sliced mushrooms) and cook in the oven for another 10-15 minutes.