The Ultimate Baked Mac and Cheese with Crispy Cornflake Topping
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Creamy, cheesy, and baked until bubbly, this mac and cheese is anything but ordinary. Ok technically it’s ‘shells and cheese’ but who searches for that? Let’s just be real for a minute, shells are superior.
This mac and cheese is topped with crunchy, buttery cornflakes that gives every bite the perfect contrast of texture and flavor. Think classic comfort food with a fun twist. Perfect for potlucks, holiday dinners, or just a next-level weeknight meal.

How I Make It
Start by cooking your pasta is very salty water, but leave it a little underdone because it will finish cooking in the oven. Nobody wants overcooked noodles in their mac.
While the pasta boils, make the cheese sauce. Melt butter in a pot, add flour, and whisk it into a smooth roux. Slowly pour in warmed milk while whisking. Let it simmer until the sauce thickens up. Add Dijon mustard, nutmeg, paprika, and salt for that extra depth of flavor.
Now comes the cheese. All 7 cups of it. I shredded up all my favorite cheeses up in a food processor. Set 1.5 cups of that cheese to the side for layering later. Add the 5.5 cups of cheese slowly so it melts smoothly into the sauce. Once it is totally creamy, mix in the pasta shells.
In a 9 x 13 pan (I love these casserole dishes!), layer half the mac and cheese, sprinkle on an extra 1.5 cups of cheese, then top with the rest of the mac.
For the topping, melt some butter and stir in crushed cornflakes, fresh thyme, Parmesan, and a pinch of salt. Let it toast for a minute or two to bring everything to life. Spread it over the mac and cheese.
Bake until the top is golden and the edges are bubbling.

What type of cheese works best for mac and cheese?
This has been a topic of debate in out house for quote some time. My kids are picky when it comes to mac and cheese, surprisingly so. You would think kids would love any mac and cheese, right? Wrong. We have discovered that we don’t like using sharp cheddar or anything pre-shredded in our mac n cheese. A combination of softer, fresh, and melty cheeses works best. For this recipe, I landed on a creamy cheddar, a monterey and colby jack blend, and finished it of with some gouda & gruyere for that extra tang. I think fontina would also work beautifully in this blend. Feel free to get creative here!
Tips
- Freshly shredded cheese melts better than pre-shredded
- Swap in panko if you do not have cornflakes
- Let the dish rest for about 10 minutes before digging in so the sauce can set
Make Ahead Suggestions
- Assemble the mac and cheese without the topping, cover tightly, and refrigerate up to 2 days ahead
- Store the cornflake topping separately in a sealed container at room temperature
- When ready to bake, let the casserole sit out for 30 minutes, top with the cornflakes, and bake as directed
- You can also freeze the assembled mac and cheese (without the topping) for up to 2 months. Thaw overnight in the fridge before baking

The Ultimate Baked Mac and Cheese with Crispy Cornflake Topping
Ingredients
Notes
Method
- Cook pasta in salty water until al dente so it can finish cooking in the oven.
- Melt butter, whisk in flour, and slowly add warmed milk to make a roux. Simmer to thicken.
- Stir in mustard, nutmeg, paprika, and salt.
- Add all but 1.5 cups of the shredded cheese gradually until melted and smooth.
- Toss cheese sauce with pasta.
- Layer half the mac and cheese in a 9 x 13 pan, sprinkle with reserved 1.5 cups of cheese, then top with remaining mac.
- Melt butter for topping, add cornflakes, thyme, Parmesan, and salt. Toast lightly.
- Spread topping over mac.
- Bake at 350°F for 30 minutes until golden and bubbly.
Can this be made a day in advance except the topping?
I think so! You may want to add some extra milk or pasta water to keep the sauce a little thinner as it thickens as it sits. Sorry I didn’t get back right away!
I used a generous 5 CUPS of Corn Flakes!!! Golden!