Prepare the Filet Mignon: Preheat the oven to 400°F (200°C). Season the filet mignon with salt and pepper. Heat olive oil in a cast-iron skillet over medium-high heat. Sear the steaks for 2-3 minutes per side until browned. Transfer the skillet to the oven and roast for 5-7 minutes for medium-rare. Remove and let rest.
Make the Pomegranate Reduction: In the same skillet, sauté shallots and garlic until softened. Add the pomegranate juice and honey (if using), and simmer until reduced by half and thickened. Set aside.
Cook the Potatoes: Boil the potatoes in salted water until tender, about 15-20minutes. Drain and mash with butter and cream. Stir in truffle oil or butterand season to taste.
Plate the Dish: Spoon truffle mashed potatoes onto the plate, place the filet mignon on top, and drizzle with pomegranate reduction. Garnish with fresh herbs.