Boil Pasta: Bring a large pot of salted water to a boil. Add the penne pasta and cook until al dente, about 8-10 minutes. Drain and set aside.

Sear the Steak: Heat olive oil in a large skillet over medium-high heat. Season steak pieces with salt, pepper, and Cajun seasoning. Cook for about 5-7 minutes until browned, then remove from the skillet.

Sauté Garlic: In the same skillet, add minced garlic. Sauté for about 1 minute until fragrant, stirring frequently.

Create the Sauce: Pour in heavy cream and bring to a gentle simmer. Slowly add shredded white cheddar cheese, stirring until smooth.

Combine Ingredients: Return cooked steak to skillet, then add drained penne. Toss to coat everything with sauce.

Serve Warm: Ladle onto plates and garnish with parsley if desired.