Preheat your oven to 400°F (200°C).
Halve the baby potatoes and toss them on a parchment-lined baking sheet with half of the olive oil and a pinch of salt and pepper; roast for 15 minutes.
While potatoes roast, finely mince the garlic, rosemary, and thyme, then mix them with the remaining olive oil to create a thick herb paste.
Season the beef tenderloin with the remaining salt and pepper, then rub the herb paste evenly over all sides of the meat.
Heat an oven-safe skillet over medium-high heat and sear the beef for 2 minutes per side until a golden-brown crust forms.
Place the skillet in the oven and roast for 10-12 minutes, or until the internal temperature reaches 130°F for medium-rare.
Add the asparagus spears to the potato baking sheet during the last 8 minutes of roasting.
Remove the beef from the oven and let it rest on a cutting board for 5 minutes to lock in the juices.
Slice the beef into thick medallions and serve with the roasted vegetables and a small dollop of ghee.