Whisk them together
Then cook over medium low heat, whisking constantly until thickened
Chill for at least 3 hours
Once set, cut into bite size cubes
Brush with egg yolk, wash and either air Fry or bake on a greased pan
I use my toaster oven. 25 minutes at 3:50 Fahrenheit
Keep an eye out on it since oven times can vary
The goal here is to just get those beautiful golden toasty spots on top and they're good
