Ingredients:

1.2kg / 2.4lb beef tenderloin (centre cut)
2 tbsp olive oil
1 1/2 tsp salt
1 tsp black pepper
Sauce:

4 tbsp butter
500g / 1 lb mushrooms, sliced
2 garlic cloves, minced
1/2 cup dry white wine or beef broth
1 cup beef broth
1 cup heavy cream
1 tbsp Dijon mustard
1 tbsp chopped fresh thyme or 1 tsp dried thyme
1 tbsp chopped fresh parsley or chives (for garnish)
Instructions: