Prepare the Steak: Pat the sirloin steak completely dry with paper towels—this is the secret to a perfect crust!
In a small bowl, combine the fresh oregano, minced garlic, lemon zest, red pepper flakes, salt, and pepper. Rub this fragrant mixture evenly over all surfaces of the steak.
Let it sit at room temperature for at least 15 minutes to absorb the flavors while you prepare the grill.
Grill the Steak: Preheat your gas grill to medium-high heat, about 400-450°F or 200-230°C (450°F). Clean and grease the grill grates well.
Place the seasoned steak on the hot grill and cook for 4-6 minutes per side for a beautiful medium-rare, or adjust the time to your preferred level of doneness.
Rest the Steak: This step is non-negotiable for a juicy steak!
Transfer the cooked steak to a cutting board and let it rest for 10 minutes. This allows the juices to redistribute throughout the meat, ensuring every bite is tender and flavorful.
Start the Cream Sauce: While the steak is resting, melt the butter in a small saucepan over medium heat.
Add the 2 minced garlic cloves and sauté for about 1 minute until fragrant. Be careful not to let it brown, as it can become bitter.
Build the Sauce: Whisk in the almond flour and cook for another minute to lightly toast it. Slowly pour in the beef broth while whisking continuously to prevent any lumps from forming.
Stir in the dried basil and oregano and bring the mixture to a gentle simmer.
Make it Creamy: Reduce the heat to low.
Add the softened cream cheese, freshly grated Parmesan, and heavy cream.
Stir constantly until the cheeses are fully melted and the sauce is smooth, velvety, and slightly thickened, which should take about 1-2 minutes.
Season with salt and pepper to taste, then remove from the heat.
Serve: Slice the rested steak against the grain into your preferred thickness.
Arrange the slices on a platter and drizzle generously with the warm garlic Parmesan cream sauce.
Serve immediately and prepare for compliments!
Let the steak rest at room temperature for 15-30 minutes before cooking. This helps it cook more evenly from edge to center.