Preheat your oven to 425°F and line a large baking sheet with parchment paper for easy cleanup.
Finely mince the garlic, rosemary, and thyme leaves until they are highly aromatic.
In a small bowl, whisk together 1 teaspoon of olive oil with the minced garlic, herbs, sea salt, and black pepper.
Pat the beef tenderloin dry with a paper towel and rub the herb-oil mixture over all sides of the meat.
Halve the baby potatoes and toss them in a bowl with 0.5 teaspoon of olive oil and a tiny pinch of salt.
Place the beef and potatoes on the prepared baking sheet and roast for 12 minutes.
While the beef starts, trim the woody ends off the asparagus and toss the spears with the remaining 0.5 teaspoon of olive oil.
Add the asparagus to the baking sheet and roast everything for another 10-12 minutes until the beef reaches 135°F for medium-rare.
Remove from the oven and let the beef rest on a cutting board for at least 5 minutes before slicing into medallions.