Last Updated on December 18, 2020

One-pan meals don’t get more elegant and simple than this dish that maximizes flavor at every step. Brown butter and rosemary flavor the steaks and roasted carrots.

Even the Brussels sprouts and peas get a quick sauté in the same skillet at the end while the filets rest.

One-Pan Filet Mignon with Rosemary Brown Butter and Sautéed Veggies

4.27 from 56 votes

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Protein: Beef

Cut: Filet Mignon

Diet: Gluten Free

Course: Main Course

Prep Time: 5

Cook Time: 45

Total Time: 50

Servings: people

Ingredients

2 ea ButcherBox Filet Mignons
2 tsp kosher salt
1 tsp freshly ground black pepper
2 Tbsp avocado oil
4 cloves garlic smashed
2 sprigs fresh rosemary
3 ea carrots thickly slicing into coins
6 ea Brussels sprouts shaved
½ c fresh peas
1 Tbsp butter
2 Tbsp sherry vinegar

Instructions

Bring filet mignons to room temperature.
Preheat oven to 425°F.
Preheat cast-iron skillet over high heat. Season filet mignons with kosher salt and freshly ground black pepper on all sides.
Add avocado oil to cast-iron skillet and sear filet mignons on both sides, 3 minutes per side.
Add butter and rosemary to pan, and spoon herb butter over filet mignons for 30 seconds.
Remove filet mignons from cast-iron skillet and set aside, reserving 2 Tbsp of the pan juices.
Place carrot coins and smashed garlic into cast-iron skillet and simmer for 2 minutes.
Add 1 Tbsp sherry vinegar and place cast-iron skillet into oven for 20 minutes or until carrots are fairly tender.
Place filet mignons back in cast-iron skillet on top of carrots, and cook in oven for 10 more minutes until medium-rare, or meat thermometer inserted into thickest part of filet mignon reads 120°F.
Remove cast-iron skillet from oven. Set filet mignons aside to rest, place carrots in bowl and smash. Season with additional kosher salt and freshly ground black pepper as needed.
Place cast-iron skillet back on stove over medium heat. Add Brussels sprouts and peas to cast-iron skillet, then add remaining sherry vinegar and sauté for 3 minutes. Season with salt and pepper to taste.
Individually plate filet with vegetables or serve family style. Drizzle remaining brown butter on each plate or over the filets if serving family style.

Notes

For Grain-Finished Filet Mignon:

Increase the cook time by 2-3 minutes in general to achieve the desired results. The tenderloin steak for grain finished is 2 ounces larger than it's grass fed equivalent. That, combined with more intramuscular fat in the grain finished beef means they will need to cook these steaks slightly longer.

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