Preheat grill to high heat.

Combine Dijon mustard, ancho chile powder and sour cream and set aside.

Season steaks with salt and pepper and place on grill.

Turn heat down to medium high and grill six minutes on each side for a medium rare steak.

Let steaks rest five minutes then serve with mustard on the side.

Serving suggestion: Marinated heirloom tomato salad.