01 - Cook bowtie pasta in large pot of salted boiling water until al dente per package directions. Drain while 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 medium bowl. Toss until evenly coated.
03 - Heat 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 covered loosely.
04 - Reduce skillet heat to medium. Add butter and minced garlic. Sauté 1 minute until fragrant.
05 - Pour in heavy cream and add cubed cream cheese. Stir continuously until cream cheese melts completely and sauce achieves smooth consistency.
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 black pepper to taste.
07 - Add drained pasta to sauce, tossing thoroughly to coat. Add reserved pasta water gradually if sauce requires thinning to achieve desired consistency.
08 - Arrange spiced beef over pasta. Either toss gently to distribute or leave beef atop as garnish.
09 - Sprinkle with chopped parsley and additional Parmesan cheese. Serve immediately.