Herb-Crusted Mustard Roast Beef Recipe

Why this roast works so well:

• Flavorful and tender: a fragrant herb and mustard crust adds bold flavor while keeping the meat juicy.
• Simple to prepare: straightforward steps deliver a polished result.
• Crowd-pleaser: great for family dinners, guests, or holiday tables.
• Cost-effective: a more affordable cut like top sirloin or eye of round gives great results without the price tag of prime rib.

What You’ll Need

Gather these ingredients for the herb mustard crusted roast beef:

• Beef roast: 3 pounds (about 1.5 kg) — top sirloin or eye of round work well.
• Avocado oil: for searing; it has a high smoke point.
• Salt and freshly ground pepper: to season.
• Fresh herbs and garlic: finely chopped parsley, oregano, thyme, rosemary, and minced garlic for the crust.
• Hot mustard: Dijon or a German-style hot mustard mixed with the herbs forms the crust.
• Creamy Herb Sauce (optional): a simple sauce pairs beautifully with the roast.

Detailed ingredient measurements and full directions are in the recipe card below.

Equipment Needed

Essential tools:

• Cast iron pan: a 12-inch skillet is ideal for searing and oven roasting.
• Digital meat thermometer: ensures precise doneness for perfect results.

How To Make Herb Mustard Crusted Roast Beef

Overview: sear to develop color, coat with the herb-mustard mixture, then finish roasting to your preferred doneness. Rest before slicing.

1. Sear the roast: Pat the roast dry, season with salt and pepper, heat avocado oil in a cast iron pan over medium-high heat and sear all sides until golden brown. Place the pan with the roast in a 350°F (180°C) oven for 20 minutes.
2. Prepare the herb-mustard mixture: Combine chopped parsley, oregano, thyme, rosemary and minced garlic with the hot mustard until well mixed.
3. Apply the crust: Remove the pan from the oven after the initial 20 minutes and spread the herb and mustard mixture over the top and sides of the roast.
4. Finish roasting: Return the roast to the oven and cook to your desired doneness. Use a digital thermometer: pull the roast at about 125°F for medium-rare or 135°F for medium (these targets are about 5°F below the final temperature to account for carryover cooking).
5. Rest: Transfer the roast to a cutting board, tent loosely with foil, and allow it to rest 10 minutes so juices redistribute.
6. Slice and serve: Slice thinly against the grain and serve with a creamy herb sauce, gorgonzola cream, or mushroom cream sauce if desired.

What To Serve With Roast Beef

Serve the roast with a complementary sauce—Creamy Herb Sauce is a great match—or try gorgonzola cream, creamy mushroom sauce, or a Dijon cream. Add sides such as:

• Potatoes: mashed, cheesy, roasted, or baked.
• Roasted or sautéed vegetables: asparagus, Brussels sprouts, mixed root vegetables, garlic butter green beans, or broccoli.
• Salad: a fresh green salad or a composed salad adds balance.
• Stuffing: a savory sage-and-onion stuffing pairs nicely for a heartier meal.
• Crusty bread: for soaking up any sauce or pan juices.

Helpful Tips

Bring roast to room temperature

Remove the roast from the refrigerator 45–60 minutes before cooking so it warms slightly and cooks more evenly.

How long to cook roast beef?

Cooking time varies with roast size and desired doneness. A meat thermometer is the most reliable method: aim for about 125°F for medium-rare and 135°F for medium, then rest to reach the final temperature.

Allow roast to rest

Tent the roast loosely with foil and rest 10 minutes before slicing. Resting helps retain juices and gives a more tender result.

Choose quality meat

When possible, select the best quality meat available—local, grass-fed, or pastured options will typically offer better flavor and texture. Supporting local farms or reputable butchers is ideal when feasible.

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