4 beef tenderloin truffle butter sauce Recipes

whole beef tenderloin , trimmed of fat, silverskin, and the chain (see cooks notes); or a 5- to 5 1/2-pound well-trimmed tenderloin roast, salt, freshly ground black pepper, olive oil, divided, dried porcini mushrooms, ground to a powder in a blender, black-truffle butter, softened, all-purpose flour, crimini (baby bella) mushrooms, trimmed and quartered into wedges, beef stock or low-sodium broth, divided, chopped scallion greens

canola oil, shallots, sliced (about 2 cups), sliced mushrooms, sugar, red wine vinegar, pinot noir or other dry red wine, low-salt chicken broth, beef broth, fresh thyme sprigs, whole black peppercorns, turkish bay leaf, butter, room temperature, all purpose flour, beef tenderloin roast, olive oil, whipping cream, fresh baby spinach leaves, truffled french fries

yukon gold potatoes, washed , cut into 1/8-inch round slices, olive oil, herb mix , recipe follows, salt and fresh ground black pepper, truffle butter (can be store bought), beef tenderloin medallions, olive oil, herb mix , recipe follows, salt and fresh ground black pepper, butter, shallots, minced, dried morels , soaked in warm water to cover for 30 minutes, strained, water reserved, brandy, veal stock, heavy cream, salt and fresh ground black pepper, olive oil, minced shallots, beet greens, arugula, stems removed, baby spinach, salt and black pepper, tomato concasse (peeled, seeded , and cut into julienned strips), chopped fresh thyme leaves, chopped fresh rosemary, italian flat-leaf parsley, chopped