01 -
Grease an 8x8 baking dish thoroughly with butter.
02 -
Arrange the potatoes in an even layer inside the baking dish.
03 -
In a saucepan, stir together the milk, cream, salt, mustard, pepper, and nutmeg.
04 -
Cook the mixture on medium heat, stirring, until it nearly starts to boil (about 5 to 10 minutes).
05 -
Lower the heat, add the cheese, and stir till it melts completely.
06 -
Drizzle the cheesy mixture over the potatoes.
07 -
Allow it to cool for a couple of minutes.
08 -
Dot the surface with butter slices.
09 -
Finish by dusting paprika all over.
10 -
Seal the dish tightly with cling wrap.
11 -
Place in the fridge for at least 12 hours or overnight.
12 -
Set your oven to 350°F.
13 -
Bake the dish uncovered for 45 minutes.