1. Bring a large pot of salted water to a boil and cook penne until al dente then drain and reserve 1/2 cup of the pasta water

2. Pat the beef dry toss with Cajun seasoning and heat olive oil in a large skillet over medium high then sear beef in a single layer until browned on all sides 3 to 4 minutes and transfer to a plate

3. Reduce heat to medium add butter to the same skillet and sauté garlic for 30 seconds until fragrant

4. Stir in heavy cream and bring just to a gentle simmer then add Velveeta cubes and whisk until melted and smooth

5. Add the shredded four cheese blend and whisk until fully melted adjusting with a splash of reserved pasta water for a pourable sauce

6. Season the sauce with salt and black pepper then add the cooked penne and toss until every piece is coated

7. Return the Cajun beef bites to the pan and fold gently to combine then warm through for 1 minute

8. Remove from heat garnish with parsley and an extra pinch of Cajun seasoning then serve hot