Fancy French Onion Beef Tenderloin
with Rosemary Potato Wedges, Lemony Green Beans & Horseradish Cream
- Milk
- Eggs
The star of this home-cooked show is the humble onion, a vegetable that needs nothing more than a little patience to coax out its rich savory-sweetness. Pile that wonderful caramelized onion atop juicy, pan-seared beef tenderloin, and drizzle with a bright, zippy lemon horseradish sauce. Add sides of roasted potatoes with rosemary and lemony roasted green beans, and you've got yourself a luxe steak and potatoes dinner—no restaurant required.
Ingredients
1.5 tablespoon
Sour Cream
(Contains: Milk)
6 ounce
Green Beans
12 ounce
Potatoes
1 unit
Onion
10 ounce
Beef Tenderloin Steak
1 unit
Lemon
0.01 ounce
Rosemary
¾ teaspoon
Dried Thyme
1 unit
Beef Stock Concentrate
1 ounce
Creamy Horseradish Sauce
(Contains: Eggs)
2 tablespoon
Mayonnaise
(Contains: Eggs)
1 teaspoon
Garlic Powder
Not included in your delivery
4 teaspoon (tsp)
Cooking Oil
1 teaspoon (tsp)
Sugar
1 tablespoon (tbsp)
Butter
(Contains: Milk)
teaspoon (tsp)
Salt
teaspoon (tsp)
Black Pepper
Nutrition Values
Utensils
Cooking Steps
Adjust rack to middle position (top and middle positions for 4 servings) and preheat oven to 450 degrees. Wash and dry produce.
Cut potatoes into ½-inch-thick wedges. Strip rosemary leaves from stems; finely chop leaves until you have ¼ tsp (½ tsp for 4). (We sent more; save the rest for another use!) Halve, peel, and thinly slice onion. Zest and quarter lemon. Trim green beans if necessary.
Toss potatoes on one side of a baking sheet with a drizzle of oil, chopped rosemary, and a big pinch of salt and pepper. Spread out in a single layer.
Roast on middle rack for 16 minutes (you’ll add the green beans then). (For 4 servings, spread potatoes out across entire sheet.)
Meanwhile, heat a drizzle of oil in a medium, preferably nonstick, pan (use a large, preferably nonstick, pan for 4 servings) over medium-high heat. Add onion and ¼ tsp thyme (½ tsp for 4); cook, stirring occasionally, until browned and softened, 5-8 minutes.
Stir in stock concentrate, ¼ cup water, 1 tsp sugar, and 1 tsp lemon juice (for 4, use ½ cup water, 2 tsp sugar, and 2 tsp lemon juice). Cook until thickened and saucy, 2-3 minutes more.
Remove from heat; stir in 1 TBSP butter (2 TBSP for 4) until melted. Taste and season with salt and pepper if desired. Transfer to a medium microwave-safe bowl; tightly cover with plastic wrap. Rinse and wipe out pan.
While onion cooks, in a second medium bowl, combine sour cream, horseradish sauce, mayonnaise, and a squeeze of lemon juice. Season with salt and pepper to taste.
Pat beef* dry with paper towels and season generously all over with garlic powder, ½ tsp thyme (1 tsp for 4 servings), salt, and pepper. (Be sure to measure the thyme—we sent more!)
Once potatoes have roasted 16 minutes, remove sheet from oven. Carefully toss green beans on opposite side with a drizzle of oil, salt, and pepper.
Return to middle rack and roast until potatoes are golden brown and green beans are lightly browned and tender, 10-12 minutes more. (For 4 servings, leave potatoes roasting; add green beans to a second baking sheet and roast on top rack.)
Heat a drizzle of oil in pan used for onion over medium-high heat. Add beef and cook to desired doneness, 4-7 minutes per side.
Transfer to a cutting board and let rest for a few minutes.
If necessary, reheat saucy onion in the microwave, 15-20 seconds.
Toss green beans with as much lemon zest as you like.
Slice beef against the grain.
Divide beef, green beans, and potatoes between plates. Top potatoes with saucy onion and drizzle beef with as much horseradish cream as you like. Serve with remaining lemon wedges on the side.
Customer reviews
Review summary
Updated on Feb 2026- Flavor: Many loved the tender, juicy beef and flavorful sauces; some found the horseradish cream and onions especially delicious 🍲.
- Ease of prep: Several noted it was time-consuming with many steps, but worth the effort for a restaurant-quality meal at home.
- Suggestions: Consider searing the steak in butter with rosemary; some preferred mashed potatoes over wedges for a more cohesive dish.
- Leftovers: A few mentioned the portions were small, especially the meat; others found it filling with just the right amount.
- Quality: Some received tough or gristly cuts of beef; others praised the tenderness and quality of the tenderloin.
Reviews from our home cooks
This was by far my favorite meal. The beef was so tender, the sauce was delicious, the potatoes were simple but with the rosemary was amazing, and the beans pulled it all together perfectly. This deserved a 5 out of 4 stars.
Christ, was this good. Couple of things: the sauce had a bit too much mayonnaise in it and I didn't drizzle it over the steak due to personal preference (or cut up the steak), and I was provided with (non dried) thyme instead of rosemary, which didn't end up mattering too much (but would've been nice to have rosemary potatoes). The onions and beef stock were out of this world - would appreciate their inclusion on more non premium meals!
This was absolutely fantastic! The onion sauce was unique with fresh rosemary in it, and the horseradish sauce for the steak was delicious as well. This meal was worth the extra work involved and would make a perfect dinner if you are having guests.
This was very good! When cooking the steak, add a tablespoon of butter and one of the extra rosemary sprigs. Spoon the butter over the steak as it cooks. It's worth the extra step. The horseradish sauce was too much with sour cream AND mayo. It would've been better with just one of those. Maybe add a roasted garlic clove as well.
Wonderful meal! We loved the caramelized onion on the meat. We did not care for the horseradish sauce, though. The beef was very tasty.
Sigh...I can never seem to get the potatoes done at the same time as everything else! They burned! But other than that it was a really good meal and I liked the French onion beef topping!
Best meal of all those I've tried so far. The horseradish sauce complimented the tenderloin so well.
Very good. Sauce and onions went so well with the beef. Beans didn't last long enough to cook. Had to toss them. Ate this on day 6.
Best meal from Hello Fresh ever! I used a needler on the steak and butter basted it while cooking but otherwise followed the recipe exactly. The onion sauce was so tasty and the steak melted in the mouth. Bravo!
The beef tenderloin wasn't as tender as I thought it would be and I had it out of the frig an hour before I started cooking. Potatoes were good, but I didn't care for the onion gravy. The beans were very good.
