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Pan-seared filet mignon topped with golden caramelized onions served with creamy garlic mashed potatoes.

Filet Steak with Caramelized Onions & Garlic Mashed Potatoes

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Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings: 2 servings
Calories: 850
Ingredients Method

Ingredients
  

  • 2 (6-8 oz) beef tenderloin filets
  • 2 large yellow onions, thinly sliced
  • 1 lb Yukon Gold potatoes, peeled and cubed
  • 4 cloves garlic , minced
  • 4 tbsp unsalted butter, divided
  • 2 tbsp olive oil, divided
  • 1/4 cup heavy cream
  • 1 tsp fresh thyme leaves
  • Kosher salt to taste
  • Freshly ground black pepper to taste

Method
 

  1. Place potatoes in a pot of cold salted water.
  2. Bring to a boil and simmer for 15-20 minutes until tender.
  3. Drain potatoes and return to the pot.
  4. Mash with 1 tbsp butter, heavy cream, and minced garlic until smooth.
  5. Season with salt.
  6. In a large skillet over medium-low heat, melt 2 tbsp butter with 1 tbsp olive oil.
  7. Add onions and a pinch of salt.
  8. Cook, stirring occasionally, for 30 minutes until deep golden brown.
  9. Season steaks generously with salt and pepper.
  10. Heat 1 tbsp olive oil in a heavy skillet over medium-high heat.
  11. Sear steaks for 4-5 minutes per side for medium-rare.
  12. Add remaining 1 tbsp butter and thyme to the pan in the last minute, basting the steaks.
  13. Rest steaks for 5 minutes before serving alongside potatoes and topped with onions.