>>title: Hollandaise Sauce, Microwave
>>course: Sauce
>>note: If sauce separates after microwaveing, add a splash of water and whisk until combined.

Bring @butter{1/4 c}, @lemon juice{2 tbl}, @salt{pinch} and cayenne pepper{1/4 tsp} just to the boil in the #microwave{} in e.g. a microwave-safe #2-cup measuring cup{}.
While it's heating up, beat @egg yolks{2} until smooth.
Slowly drizzle melted butter into the egg yolk mixture while whisking. This exact thing is important.
Return mixture to the measuring cup. It may set up immediately.  If not, 
Microwave for ~{10 seconds} and #whisk{}. Repeat until it firms up.