Beef Tenderloin Roast with Smashed Potatoes.

Beef Tenderloin Roast with Smashed Potatoes and the yummiest creamy marsala sauce. Whole roasted beef tenderloin with garlic butter, herbs, and a creamy mushroom marsala sauce. Serve this elegant holiday roast alongside extra crispy garlic and brown butter smashed potatoes. All together, it is so delicious. It’s a perfect dinner to serve to family and friends. Time to cozy up for the holidays!

When it comes to the holidays, I tend to return to the traditions I love most. I find comfort in the foods I enjoyed growing up, but I also add new additions like festive cocktails, new cookies, and lots of great appetizers!

But when it comes to the main event, I go traditional with the menu.

For Christmas Eve, that means beef tenderloin. When I lived in Cleveland, my mom used to host Christmas Eve dinner for our family. The party was always 25 to 30 people give or take.

They were big, but thankfully, my mom has always been smart with her entertaining and never did anything too fancy or over the top. She kept the menu simple but delicious!

For Christmas Eve, it was always a beef tenderloin roast. She’d pick up two or three whole tenderloins, season them very simply, and then roast them just before dinner. She always made her famous cheesy potatoes, baked up some Rhodes frozen dinner rolls or Pillsbury crescent rolls, and then asked guests to bring sides.

Dessert was always her death by chocolate trifle. Oh, so delicious!

It’s a simple menu but one we always look forward to! Now that I make dinner, I love to make similar dishes—and always a beef tenderloin!

This is the recipe I’ve been making for a while. I do the roast and potatoes together; then I always serve my roast with creamy mushroom Marsala. We love it!! I think the sauce makes the roast even more delicious!

Here are the details

Ingredients

• baby potatoes
• beef tenderloin roast
• salted butter
• Dijon mustard
• Worcestershire sauce
• fresh thyme
• garlic
• cremini mushrooms
• Marsala wine
• heavy cream
• grated parmesan cheese

Special Tools

Ideally, a big roasting pan fitted with a rack is best. But if you don’t have a roasting pan, a sheet pan with sides is great, too!

Steps

Step 1: bring the roast to room temperature

Before you begin, take the beef out of the fridge an hour or even two before roasting.

Having the beef at room temperature allows for the meat to cook evenly throughout.

Step 2: the potatoes and beef

Start with the potatoes. I use baby potatoes. If the potatoes are oddly large, cut them in half. Now, toss the potatoes into the roasting pan. The potatoes will cook alongside the roast.

Place the beef in the center of the roasting pan. If you have a roasting rack that fits in your pan, use that; if not, that’s okay, too!

Step 3: make the butter sauce

Mix the melted butter with Dijon mustard, Worcestershire sauce, fresh thyme, and garlic.

Pour the butter sauce over the tenderloin, making sure to get the butter all around the meat.

Step 4: roasting

Roast the with a meat thermometer inserted directly into the roast. Using a thermometer will ensure you have a roast that is cooked to your liking.

For a medium-rare roast, I roast my meat to 120 F. and usually take it out around 115 F. The meat continues to cook as it rests.

While the meat is roasting, the potatoes will roast simultaneously. The butter that we poured over the roast will melt all around the potatoes. It will magically create the most delicious, garlicky, butter-roasted potatoes. They always turn out so good when roasted next to the meat.

Step 5: the Marsala sauce

This sauce is what makes the roast so delicious.

Start by crisping the mushrooms in butter. Add fresh thyme and garlic, then pour over some Marsala wine and let the mushrooms caramelize. These are absolutely the most delicious mushrooms.

When the mushrooms are caramelized, add the remaining wine and the cream. Season the sauce with salt and pepper.

Keep the creamy sauce simmering over medium heat and let it thicken

Step 6: let the meat rest, and finish the potatoes

Next, remove the meat from the oven. Let it rest on a serving plate for at least 10 minutes before you slice.

During this time, toss the potatoes with the butter left on the pan, then smash the roasted potatoes down using a fork or potato masher.

Sprinkle each potato with Parmesan cheese. Return the potatoes to the oven and roast them until they’re crispy! The butter will brown around each potato, making every potato even more delectable!! We’re addicted to these potatoes. My brothers would be so sad if I didn’t make them every Christmas!

Step 7: let’s eat already!

When each element—the Marsala sauce, potatoes, and beef—is ready, it’s time for dinner!

Slice the meat and serve it while hot, generously spooning the cream sauce over each slice. Then, serve the potatoes alongside the meal!!

Like all of my holiday dinners, I mix up a salad and serve it with rolls. It’s very traditional but always a dinner my family looks forward to year after year!

My mom especially, and we simply can not disappoint her at Christmas time! She always makes this time of year the most special for us, so I want to do the same for her!

And here’s what I love about this recipe: everything feels elegant and fancy, but in reality, it comes together pretty effortlessly!

This is how all holiday dinners should be!!

Looking for other easy holiday recipes?? Here are my favorites: 

Christmas Tree Cheese Board

How to Make an Easy Holiday Cheese Board

Pull Apart Roasted Garlic Pizza Dip Sliders

Pull Apart Christmas Tree Garlic Bread

Pastry Wrapped Cranberry Baked Brie

Whipped Goat Cheese with Warm Candied Bacon and Dates.

Cranberry Brie Pull Apart Bread

Baked Gruyère in Pastry with Rosemary and Garlic

Lastly, if you make this Beef Tenderloin Roast with Smashed Potatoes, be sure to leave a comment and/or give this recipe a rating! Above all, I love to hear from you guys and always do my best to respond to each and every comment. And, of course, if you do make this recipe, don’t forget to tag me on Instagram! Looking through the photos of recipes you all have made is my favorite!