01 -
Preheat oven to 220°C. Line a baking tray with parchment paper. Scrub potatoes thoroughly and pat dry. Rub potatoes with olive oil, sprinkle generously with sea salt, and arrange on the tray, spaced apart. Bake for 50 to 60 minutes, or until fork-tender.
02 -
While potatoes bake, trim steak and cut into bite-sized cubes. Toss steak with half the avocado oil, Cajun spice, and kosher salt.
03 -
Heat a cast iron skillet over high heat. Add remaining avocado oil. Once shimmering, add steak in a single layer, allowing space between pieces. Sear for 2 minutes until well-browned. Flip and cook 1 more minute, then reduce heat to low and finish for another minute until just cooked through.
04 -
Push steak to one side of skillet. Add 2 tablespoons butter and half the minced garlic to the empty side. Sauté until aromatic, then toss steak in the melted garlic butter. Sauté 1 additional minute. Transfer steak to a bowl and tent with foil to keep warm.
05 -
In the same skillet, melt remaining 2 tablespoons butter. Add remaining minced garlic and cook just until fragrant. Pour in heavy cream, scraping up any browned bits. Simmer gently for 3 to 5 minutes, stirring, until sauce thickens slightly.
06 -
Add red pepper flakes and Parmesan cheese, whisking until sauce is glossy and smooth. Squeeze in lemon juice, stir in parsley, and season with additional salt and pepper to taste. Remove from heat.
07 -
Once potatoes are baked, carefully drop each onto the counter to loosen and fluff the interior. Cut a deep lengthwise slit, then fluff the inside with a fork. Optionally, add a small knob of butter. Top each potato with steak pieces and spoon over the warm Parmesan cream sauce. Serve immediately.