Slow-Roasted Beef Tenderloin with Crispy Herb Potatoes Tips, FAQ & printable recipe

Tips for success

To achieve the absolute best sear on the beef tenderloin, make sure the surface of the meat is completely dry before applying the oil and herbs.

Moisture on the surface of the meat creates steam when it hits the hot pan, which interferes with the caramelization process and prevents a crisp crust from forming. Use paper towels to thoroughly pat down the entire roast, pressing firmly to remove any lingering dampness before seasoning.

When roasting the beef alongside the potatoes, ensure the potatoes are arranged in a single layer around the meat. This placement allows the hot air of the oven to circulate freely around each potato, ensuring they roast to a beautiful golden crisp rather than steaming. If needed, use a larger skillet or adjust the potato placement to avoid crowding, which is the key to achieving that perfect texture.

Variations

• Garlic Herb Crust: Add four crushed garlic cloves to the herb mixture before pressing it onto the beef to infuse the roast with a rich garlic flavor.
• Spicy Rosemary Oil: Infuse the rosemary oil with a pinch of red pepper flakes before tossing the potatoes for a subtle, warming kick.

Storage and make-ahead

Fridge

Store leftovers in an airtight container in the refrigerator for up to three days.

Freezer

Freezing is not recommended for this dish as it significantly degrades the texture of both the beef and potatoes.

Reheat

Reheat covered with foil in a 300°F (149°C) oven for 10-15 minutes. Avoid overheating to prevent drying out the tender beef.

Allow any leftover beef tenderloin and roasted potatoes to cool completely at room temperature for no more than two hours before storing. Place the leftovers in an airtight container to prevent them from drying out.

Store the container in the refrigerator for up to three days. For the best texture, store the sliced beef and the potatoes in separate compartments or containers if possible, which helps keep the potatoes from becoming soggy.

While this dish is best enjoyed fresh, some elements can be prepared in advance to save time. The baby potatoes can be washed, dried, and halved up to a day ahead and stored in the refrigerator in a bowl of water to prevent browning.

The herb mixture can also be chopped ahead of time. However, the beef should only be seasoned right before searing to prevent the salt in any seasoning from drawing out moisture.

Serving ideas

Present this elegant dish directly in the cast-iron skillet for a rustic yet sophisticated table presentation. Arrange the sliced rounds of beef tenderloin down the center of the skillet, overlapping them slightly, and surround them with the golden, crispy roasted baby potatoes.

Spoon any remaining warm pan juices from the bottom of the skillet directly over the beef slices right before serving to add a glossy sheen and an extra burst of flavor.

To complete the meal, serve the beef and potatoes alongside a simple, crisp green salad dressed with a light vinaigrette, or with steamed green vegetables such as asparagus or green beans. A classic red wine reduction also pairs beautifully with the rich flavors of the roasted tenderloin. Serve warm, ensuring each plate receives a generous portion of both the tender beef and the flavorful potatoes.

Frequently asked questions

Recipe card

Slow-Roasted Beef Tenderloin with Crispy Herb Potatoes

Prep 15 minCook 45 minRest 15 minTotal 1 h 15 minServes 6

Ingredients

• 2 lb beef tenderloin
• 1 1/2 lb baby potatoes
• 3 tbsp rosemary oil, divided
• 2 tbsp chopped herbs

Instructions

1. Toss the baby potatoes with two tablespoons of rosemary oil in a bowl until they are evenly coated.
2. Arrange the seasoned baby potatoes in a single layer in a large cast-iron skillet and roast in a preheated oven at 400°F (204°C) for twenty minutes until they start to soften and turn golden brown.
3. Pat the beef tenderloin completely dry with paper towels. Rub the beef with one tablespoon of rosemary oil, then press the chopped herbs firmly into the surface of the meat to form an even herb crust.
4. Heat a hot skillet over medium-high heat. Sear the herb-crusted beef tenderloin on all sides for about two minutes per side until a rich, brown crust forms and steam rises from the pan.
5. Add the seared beef tenderloin to the cast-iron skillet alongside the baby potatoes. Roast at 325°F (163°C) until the internal temperature of the beef tenderloin reaches 145°F (63°C) for safety, then let the meat rest for at least 3 minutes.
6. Slice the rested beef tenderloin into thick rounds and arrange them in the skillet with the golden roasted potatoes. Spoon the warm pan juices directly over the sliced meat before serving.

Estimated nutrition per serving

Calories

420

Protein

34 g

Carbohydrates

20 g

Fat

22 g

Fiber

3 g

Sugar

1.5 g

Sodium

120 mg

Automatic estimate from the ingredient list, not laboratory-verified.