A combo of butter and mayo make the bread extra crunchy.

I thought I had my grilled cheese down to a science until I stumbled upon Martha Stewarts method.

Forget Mother knows best; Martha knows best.

Martha Stewart next to a grilled cheese sandwich in a skillet

Simply Recipes / Getty Images / Photo by Julia Gartland; Food Styling by Kaitlin Wayne

How Martha Stewart Makes the Best Grilled Cheese

So whats Marthas secret for better grilled cheese?

Well, she actually has a few of them.

For one, she spreads her bread with a combination ofmayonnaiseand room-temperature butter before grilling.

A grilled sandwich in a frying pan, sliced diagonally on a marble surface

Simply Recipes / Photo by Julia Gartland; Food Styling by Kaitlin Wayne

For the best blend of flavors, Martha uses a combination ofcheddarand American cheese.

Specifically, she uses 1 1/2 slices of American cheese and 1/4 cup shredded cheddar for each sandwich.

Added in with the creamy American cheese, the hard cheddar gives the sandwich a sharp, nutty flavor.

For the bread, Martha uses fresh-sliced sourdough.

The sourdough makes the sandwich feel more elevated, and its tangy flavor contrasts the rich cheese nicely.