What makes it Southern mac and cheese?
Classic Southern baked mac often uses a milk and egg custard with lots of cheddar, baked in a casserole dish until it sets. It is less like stovetop mac and more like a creamy, cheesy bake you can spoon or slice.
Can I make it without eggs?
Yes, but it will bake up more like a creamy casserole than that signature custardy set. For the best egg-free version, keep the pasta slightly underdone, add an extra 1/2 cup whole milk (or 1/2 cup evaporated milk), and bake just until hot and bubbly (do not overbake). If you want a little more body, whisk in 1 extra tablespoon flour when you make the roux, but do not go heavy or it can taste pasty.
Why is my mac and cheese dry?
Usually one of three things: overbaking, not enough liquid, or using pre-shredded cheese that does not melt as smoothly. Pull it when the center is just set and still jiggles a little. It will finish setting as it cools.
Can I assemble it ahead?
Yes. Assemble up to 1 day ahead, cover, and refrigerate. Let it sit at room temp for 30 minutes before baking. You may need an extra 10 to 15 minutes in the oven.
Best cheeses for Southern mac?
Sharp cheddar is the backbone. Adding a meltier cheese like Monterey Jack, Colby, or mild cheddar keeps the texture creamy. Extra-aged cheeses can separate more easily when baked, so blend them with a good melter and keep the heat gentle.