Tenderloin with Mashed Potatoes and Onion Sauce

Name: Tenderloin with Mashed Potatoes and Onion Sauce
Total time: 45 min
Cuisine: Turkse recepten
Ingredients: 1100 g potatoes; 4 g salt; 0.5 g black pepper powder; 0.5 g dried parsley; 25 g butter; 100 ml heavy cream; 45 g butter; 425 g beef tenderloin; 3 g salt; 2 g cayenne powder; 2 g garlic powder; black pepper powder; 0.5 g fresh parsley; 50 g butter; 50 g yellow onion; 3 g salt; 2 g cayenne powder; 20 g sweet soy sauce; 300 ml heavy cream; 0.5 g dried parsley

Najat

Photo by Najat

Looking for a meal that’s comforting, flavorful, and feels like a warm hug? This recipe for tender beef with creamy mashed potatoes and a rich onion sauce ticks all the boxes. With just a few simple ingredients—potatoes, butter, cream, tenderloin, and a touch of spice—you’ll create a dish that’s both hearty and impressive.

The process is straightforward: you’ll whip up the creamiest mashed potatoes, sear perfectly seasoned beef tenderloin to golden perfection, and top it all off with a savory onion sauce that’s bursting with flavor. The beef is juicy and tender, the mashed potatoes are buttery and smooth, and the sauce ties it all together with its creamy richness.

Whether you’re cooking for a special occasion or just want to treat yourself to a restaurant-worthy meal, this recipe is sure to wow your taste buds. Let’s get cooking!

45 minutes

3 Portions

Easy

Ingredients

Portions

MASHED POTATOES

1100 g potatoes

4 g salt, ⅔ tsp

0.5 g black pepper powder, ⅙ tsp

0.5 g dried parsley, 1 tbsp

25 g butter, unsalted

100 ml heavy cream

MEAT MIXTURE

45 g butter, unsalted

425 g beef tenderloin, filet pur

3 g salt, ½ tsp

2 g cayenne powder, ⅔ tsp

2 g garlic powder, ⅔ tsp

black pepper powder, ⅓ tsp

0.5 g fresh parsley, 1 tsp

ONION SAUCE

50 g butter, unsalted

50 g yellow onion, half yellow onion

3 g salt, ½ tsp

2 g cayenne powder, ⅔ tsp

20 g sweet soy sauce

300 ml heavy cream

0.5 g dried parsley, 1 tbsp

Tips

Use high-quality meat from the butcher for the best results.

Ensure your pan is hot before adding the meat.

Avoid over-flipping or piercing the meat to retain its juices.

Choose starchy potatoes for an extra creamy mash.

Instructions

Peel the potatoes and cut them into cubes. Bring a large pot of water to a boil, add the potatoes, and cook for about 15-20 minutes until soft. Drain the water.

Aardappels pureren met kruiden, boter en slagroom

Add salt, black pepper, dried parsley, butter, and heavy cream to the warm potatoes. Mash or blend until creamy.

Remove the beef tenderloin from the fridge at least 30 minutes before cooking to bring it to room temperature. Pat the meat dry with paper towels and place it in a bowl. Add salt, cayenne powder, garlic powder, black pepper, and fresh parsley and mix well to coat the meat evenly.

Heat the butter in a frying pan over medium heat. Add the beef tenderloin and sear on both sides (about 1-2 minutes per side) until golden brown While cooking, spoon the melted butter over the meat for extra flavor. Remove the meat from the pan and let it rest for 5-10 minutes under loosely tented aluminum foil to allow the juices to redistribute.

Meanwhile, heat another frying pan over medium heat. Add the butter and let it melt. Add the chopped yellow onion and sauté for 3-4 minutes until soft. Stir in the salt, cayenne powder, sweet soy sauce, and heavy cream. Let the sauce simmer for 5-7 minutes until thickened. Add the dried parsley and mix well.

Ossenhaas met Aardappelpuree en Uiensaus eindresultaat Kookmutsjes

Slice the beef tenderloin into thick pieces or serve it whole. Pair it with the creamy mashed potatoes and flavorful onion sauce. Add grilled vegetables for a complete meal.

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Tenderloin with Mashed Potatoes and Onion Sauce

45 minutes · 3 porties · Easy

Ingredients

1100 g potatoes
4 g salt (⅔ tsp)
0.5 g black pepper powder (⅙ tsp)
0.5 g dried parsley (1 tbsp)
25 g butter (unsalted)
100 ml heavy cream
45 g butter (unsalted)
425 g beef tenderloin (filet pur)
3 g salt (½ tsp)
2 g cayenne powder (⅔ tsp)
2 g garlic powder (⅔ tsp)
black pepper powder (⅓ tsp)
0.5 g fresh parsley (1 tsp)
50 g butter (unsalted)
50 g yellow onion (half yellow onion)
3 g salt (½ tsp)
2 g cayenne powder (⅔ tsp)
20 g sweet soy sauce
300 ml heavy cream
0.5 g dried parsley (1 tbsp)

Instructions

Peel the potatoes and cut them into cubes. Bring a large pot of water to a boil, add the potatoes, and cook for about 15-20 minutes until soft. Drain the water.
Add salt, black pepper, dried parsley, butter, and heavy cream to the warm potatoes. Mash or blend until creamy.
Remove the beef tenderloin from the fridge at least 30 minutes before cooking to bring it to room temperature. Pat the meat dry with paper towels and place it in a bowl. Add salt, cayenne powder, garlic powder, black pepper, and fresh parsley and mix well to coat the meat evenly.
Heat the butter in a frying pan over medium heat. Add the beef tenderloin and sear on both sides (about 1-2 minutes per side) until golden brown While cooking, spoon the melted butter over the meat for extra flavor. Remove the meat from the pan and let it rest for 5-10 minutes under loosely tented aluminum foil to allow the juices to redistribute.
Meanwhile, heat another frying pan over medium heat. Add the butter and let it melt. Add the chopped yellow onion and sauté for 3-4 minutes until soft. Stir in the salt, cayenne powder, sweet soy sauce, and heavy cream. Let the sauce simmer for 5-7 minutes until thickened. Add the dried parsley and mix well.
Slice the beef tenderloin into thick pieces or serve it whole. Pair it with the creamy mashed potatoes and flavorful onion sauce. Add grilled vegetables for a complete meal.

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Tenderloin with Mashed Potatoes and Onion Sauce