The French cuisine is full of complex sauces which require experienced hands for the preparation. "Required" is the correct verb here. The only thing you need to even make a professional to be jealous is the #onionporn from 
. Throw a spoonful of butter into a frying pan and let it heat up well. Put the fillets in to brown on both sides for about 5 minutes for the first side and 4 for the other. Take them out on a plate and put a little more than a spoonful of flour in the frying pan. Cook till golden brown. Pour some beef bouillon, about 1 ½ glass, salt and pepper and half a glass of wine. Let the sauce boil and start to thicken. Put some balsamic vinegar in to darken the color and fine tune the taste with a spoonful of #onionporn from. Leave the sauce to thicken again and add the cooked fillets to boil and glaze in the sauce for about 2 minutes.
Serve with vegetables sauteed with butter and sizzled buttered asparagus folded to a bunch with finely cut bacon. Put it in the oven till the bacon is golden brown