Keto Blue Cheese Crusted Filet

This Keto Blue Cheese Crusted Filet with Mashed Cauliflower and Balsamic Mushrooms is a great low-carb steak dinner for 2!

This Keto Blue Cheese Crusted Filet with Mashed Cauliflower and Balsamic Mushrooms is sponsored by Castello Cheese. Thank you for supporting the brands that make CIK recipes EPIC!

Is there anything better than a steak dinner? We’ve been making steak a lot lately, trying out different cuts and cooking methods, and this Keto Blue Cheese Crusted Filet with Mashed Cauliflower and Balsamic Mushrooms is currently #1 and I don’t see it falling off that rank any time soon.

This filet is literally in the top three steaks we’ve ever had, of all time. One of the others was from a steakhouse in Santa Fe, NM and it was actually an elk filet, so I’m not even sure that it counts? The other was from a steakhouse in Portland, OR where we lived for a year and it was a Bivette. Pretty stoked that #3 was made in our own kitchen!

To level up the steak, we made an insanely good crust with Castello Danish Blue, crushed pork rinds to mimic panko crumbs and sauteed shallots and garlic along with some fresh herbs. The sharp blue mold taste with a hint of nuttiness from the Castello Danish Blue went perfectly with the rich steak.

How to make a Keto Blue Cheese Crusted Filet

We started the steak in the cast-iron skillet, getting a nice seared crust and cooking most of the way through before topping it with the cheese mixture and popping it under the broiler. The pork rinds help bind the cheese mixture together so that it doesn’t just melt and creates the perfect crust on top of the filets. The filets literally melted like butter; so tender.

To complete the meal, we served it with our self-proclaimed famous mashed cauliflower (we worked on the recipe until it was perfect for our cookbook!) and tangy balsamic mushrooms. If you want to keep this meal to one-pan, like how the recipe is written, you may want to reheat the mashed cauliflower just a touch before serving, or you can simply use a different pan or pot and have it done at almost the same time as the steak. Totally up to you!

We really love Castello Cheese. You may remember our Spicy Bacon Gouda Dip using the brand’s Gouda cheese. Castello Cheese has a variety of options with distinct tastes, flavors, and textures. There’s something for everyone.

You can find Castello Cheese in your specialty cheese aisle. Search for a store near you here.

Blue Cheese Crusted Filet with Mashed Cauliflower and Balsamic Mushrooms

This Keto Blue Cheese Crusted Filet with Mashed Cauliflower and Balsamic Mushrooms is a great low-carb steak dinner for 2!

5 from 4 votes

Print Rate Pin Recipe

Course: Main Course

Cuisine: American

Keyword: keto steak dinner

Prep Time: 15 minutes

Cook Time: 40 minutes

Total Time: 55 minutes

Servings: 2

Calories: 644kcal

Ingredients

• 2 6-oz filets
• 1 tablespoon unsalted butter
• 1 shallot thinly sliced
• 1 clove garlic minced
• 1/4 cup pork rind crumbs 0.5-oz
• 1 tablespoon fresh parsley minced
• 3 ounces crumbled Castello Danish Blue Cheese
• ¼ teaspoon salt
• ⅛ teaspoon freshly ground black pepper

Mashed Cauliflower:

• 2 tablespoons unsalted butter
• 1 clove garlic
• 10 ounces diced cauliflower florets
• ½ cup heavy cream
• Salt and pepper to taste

Mushrooms:

• 4 ounces cremini mushrooms thinly sliced
• 1 tablespoon unsalted butter
• .5 tablespoon balsamic vinegar
• Salt and pepper to taste

Instructions

• To make the mashed cauliflower, melt the butter in a 10” or larger cast-iron skillet over medium heat. Add the garlic and cook for 30 seconds until fragrant. Add the cauliflower and heavy cream. Cover and cook for 10 minutes until soft. Transfer the cauliflower, minus any leftover liquid, to a blender, food processor or use an immersion blender to puree the mixture until smooth. Add in a bit of the leftover liquid to thin, if needed. Season liberally with salt and pepper, to taste. Transfer the mashed cauliflower to a bowl and set someplace warm. Wipe out the skillet.
• Season the filets with salt on both sides. In a medium bowl, combine the minced herbs, Castello Danish Blue, pork rind crumbs, salt, and pepper, set aside.
• Heat 1 tablespoon of butter in the skillet over medium heat. Add in the shallots and cook for 5 minutes until softened. Add in the garlic and cook for another minute. Transfer to the bowl with the blue cheese mixture. Wipe out the skillet.
• Preheat the oven broiler to high. Heat the avocado oil in the skillet over medium-high heat and sear the steaks for 5-7 minutes per side.
• Top each steak with the blue cheese mixture and transfer to the oven. Broil for 5 minutes until the crust is golden. This will result in a medium-rare filet. Remove from oven and let rest while you make the mushrooms.
• Without wiping out the skillet, add the butter to the pan over medium heat. Add the mushrooms and cook for 5-7 minutes, until soft. Deglaze the pan with the balsamic vinegar and season to taste.
• To serve, divide the cauliflower between two plates. Top with mushrooms and steak. Serve immediately.

Nutrition

Nutrition Facts

Blue Cheese Crusted Filet with Mashed Cauliflower and Balsamic Mushrooms

Amount Per Serving

Calories 644 Calories from Fat 531

% Daily Value*

Fat 59g91%

Saturated Fat 37g231%

Cholesterol 178mg59%

Sodium 1024mg45%

Potassium 873mg25%

Carbohydrates 13g4%

Fiber 4g17%

Sugar 6g7%

Protein 18g36%

Vitamin A 2067IU41%

Vitamin C 73mg88%

Calcium 305mg31%

Iron 1mg6%

*

Nutritional values are estimates only and do not include carbs from sugar alcohols.

# Hashtag with us!Don't forget to mention @castiron_keto or tag #castironketo on Instagram with your creations! We love seeing what you guys are making.