Heat a large skillet over medium-high heat and melt 2 tablespoons of butter until it begins to foam. Season your ribeye or sirloin steak with salt and pepper, then add the cubed steak to the hot skillet. Sear the steak for about 4–5 minutes, turning occasionally until golden brown and cooked to your desired doneness. Remove the steak from the skillet and set it aside, allowing it to rest.

In a large pot, bring salted water to a boil. Once boiling, add the rigatoni and cook according to package instructions until al dente, usually about 10–12 minutes. Remember to stir occasionally to prevent the pasta from sticking. Once done, drain the rigatoni in a colander, reserving about a cup of the pasta water to adjust the sauce later.

Place the same skillet used for the steak back on medium heat and add the remaining 2 tablespoons of butter, allowing it to melt. Once melted, add the minced garlic and sauté for about 1-2 minutes until fragrant, stirring frequently to prevent burning. Return the seared steak to the skillet, coating it well with the aromatic garlic butter, and set aside off the heat.

In a separate saucepan over medium-low heat, warm the heavy cream. Gradually add the mozzarella, Parmesan, Fontina, and cream cheese, whisking continuously until the cheese is fully melted and the sauce is smooth, about 5 minutes. Keep a close eye on the heat to avoid separation, and season the sauce with salt and pepper to taste.

Add the drained rigatoni to the creamy four-cheese sauce, using the reserved pasta water to achieve your desired consistency; typically, adding a ¼ cup at a time works well. Stir gently to combine, ensuring each piece of pasta is coated with the luxurious sauce. Lastly, fold in the garlic butter steak, allowing the flavors to meld together beautifully.

Spoon the Cheesy Garlic Butter Steak with Rigatoni in Four-Cheese Sauce into individual bowls. Garnish each serving with a sprinkle of freshly chopped parsley for a touch of color and freshness. Serve immediately while the dish is warm and indulgent, ready to impress your family or guests with its comforting goodness.