01 -
Bring a large pot of salted water to a rolling boil. Add pasta and cook until al dente, about 8 to 10 minutes. Reserve ½ cup pasta water then drain.
02 -
In a bowl, toss sirloin cubes with salt, black pepper, garlic powder, and smoked paprika to coat evenly.
03 -
Heat olive oil over medium-high heat in a large skillet until shimmering. Add steak in a single layer and sear without stirring for 2 minutes. Flip and brown all sides evenly, about 4 to 5 minutes total. Remove steak and set aside to rest.
04 -
Reduce heat to medium and melt butter in the same skillet, scraping up browned bits. Add minced garlic and cook, stirring constantly, until fragrant and golden, about 1 to 2 minutes. Avoid burning.
05 -
Pour in heavy cream, then stir in Cajun seasoning, garlic powder, salt, and pepper. Bring to a gentle simmer and cook for 3 to 4 minutes until slightly thickened. Remove from heat and stir in Parmesan cheese until sauce is smooth.
06 -
Add drained pasta to the skillet and toss to coat thoroughly. If sauce is too thick, add reserved pasta water a little at a time to achieve desired consistency.
07 -
Return steak to the skillet and stir gently until warmed through and coated with sauce. Transfer to plates and garnish with chopped parsley. Serve immediately.