Ask your butcher to clean and tie up 3 lb tenderloin.
Also ask the butcher to grind up all the meat cleaned from the tenderloin into burger.
You paid for it so take it home.
Mix Dijon with garlic.
Add salt and pepper to taste.
Completely cover tenderloin with Djion mixture.
Put in plastic bag and let marinate for at least 1 hour.
Preheat oven to 475°.
Heat skillet on high.
Slowly pour vegetable oil in the skillet, coating the bottom of the pan.
Place tenderloin in skillet searing on all sides until browned about 12 minutes.
Place tenderloin on roasting rack and cook in the oven for 5 minutes.
Reduce heat to 400°and cook for 12 minutes.
Check temperature with meat thermometer, it should read 130 degrees.
Let cool on rack before slicing.
Slice tenderloin and serve drizzled with yogurt béarnaise.