01 - Bring a large pot of salted water to boil. Cook bowtie pasta until al dente per package directions. Drain, reserving ½ cup pasta water. Set aside.
02 - Combine beef strips with olive oil, smoked paprika, Cajun seasoning, garlic powder, onion powder, salt, and black pepper in a medium bowl. Toss until evenly coated.
03 - Heat a large skillet over medium-high heat. Add seasoned beef strips and cook 3-4 minutes, stirring occasionally, until browned and cooked through. Remove from skillet and set aside, loosely covered.
04 - Reduce skillet heat to medium. Add butter and minced garlic. Sauté 1 minute until fragrant.
05 - Pour in heavy cream and add cream cheese cubes. Stir continuously until cream cheese melts completely and sauce becomes smooth.
06 - Stir in Parmesan cheese, Cajun seasoning, and red pepper flakes if using. Simmer 2-3 minutes, stirring frequently, until sauce thickens. Season with salt and pepper to taste.
07 - Add drained pasta to the sauce, tossing thoroughly to coat. If sauce is too thick, gradually add reserved pasta water until desired consistency is achieved.
08 - Top pasta with cooked spiced beef. Toss gently to combine or leave beef arranged on top as a garnish.
09 - Sprinkle with chopped fresh parsley and additional Parmesan cheese. Serve immediately while hot.