📖 Instructions

1. First things first, preheat your oven: Get that oven humming at 375°F (190°C). If you're using a convection oven, you might want to drop it to 350°F (175°C). Then, lightly grease a 9x13 inch baking dish (or similar size for 1X-2X servings, adjust larger for 3X-4X) with butter or cooking spray. This is key for easy cleanup and a nice, even bake.
2. Cook the macaroni: Bring a large pot of salted water to a rolling boil. Add your elbow macaroni and cook it according to package directions, but aim for about 1-2 minutes *less* than al dente. This is super important because it'll continue to cook in the oven, and we don't want mushy pasta, right? Drain it well and set it aside. Don't rinse it; that starch helps the sauce stick!
3. Make the roux: In a large, heavy-bottomed pot or Dutch oven, melt the butter over medium heat. Once it’s fully melted and slightly bubbling, sprinkle in the all-purpose flour. Whisk continuously for about 1-2 minutes until it forms a pale, golden paste, sort of like wet sand. This is your roux, the base of our luscious sauce!
4. Build the béchamel: Gradually whisk in the whole milk, a little at a time, making sure to incorporate each addition fully before adding more. This prevents lumps. Keep whisking until the mixture is smooth and starts to thicken, about 5-7 minutes. It should be thick enough to coat the back of a spoon. Reduce the heat to low.
5. Melt the cheeses: Now for the cheesy goodness! Add the softened cream cheese to the béchamel, whisking until it’s completely melted and smooth. Then, gradually add the shredded sharp cheddar and Gruyere cheeses, a handful at a time, whisking constantly until each batch is fully melted and incorporated before adding the next. Keep the heat low during this step to prevent the cheese from seizing or getting oily.
6. Flavor boost: Once all the cheese is melted and the sauce is smooth, whisk in the heavy cream, Dijon mustard, freshly grated nutmeg, salt, and black pepper. Give it a taste here. Does it need a little more salt? A pinch more pepper? This is your moment to adjust the seasoning to your liking.
7. Combine and bake (for 1X, 2X, 3X, 4X): Gently fold the cooked, drained macaroni into the cheese sauce until every noodle is beautifully coated. Pour the macaroni mixture into your prepared baking dish, spreading it evenly. If you like, sprinkle with Panko breadcrumbs and grated Parmesan for a subtle extra crunch, but the 'cream top' will form beautifully without them too.
8. Bake until golden and bubbly: Place the baking dish in your preheated oven. Bake for 20-25 minutes, or until the top is golden brown and bubbly, and the cheese sauce is hot and slightly set. For a deeper golden crust, you can carefully broil for the last 1-2 minutes, but watch it like a hawk – it can go from perfect to burnt in a flash!
9. Rest and serve: Remove the mac and cheese from the oven and let it rest for about 5-10 minutes before serving. This resting period allows the sauce to set a bit more, making it easier to serve and preventing it from being too runny. Dig in and enjoy your perfectly creamy, comforting Cream-Top Mac Bowl!