Rub the pork tenderloins all over well with salt and pepper. Sauté pork tenderloins on a heavy bottom pan with high borders - I use Le Creuset pot - with olive oil until all sides are nicely browned.
Mix together the heavy cream and mustard in a bowl. Add to the pork.
Place pan in the hot oven and cook for 45 minutes covered. Turn occasionally.
Giangi's Kitchen provides nutritional information, but these figures should be considered estimates, as a registered dietician does not calculate them.