Step by step

1. Melt butter in glass measuring jug in microwave until melted and very warm. Alternatively, melt butter in small saucepan over medium-low heat until melted and very warm. Transfer to glass measuring jug.

2. Combine egg yolks, lemon juice and salt in blender jar of the KitchenAid ARTISAN Power Plus Blender. Secure lid and turn dial to Speed 3. Blend until smooth for about 20 seconds. Turn down dial to Speed 2. With blender running, remove ingredient measuring cap and slowly pour in warm melted butter. Insert ingredient measuring cap and turn dial to Speed 6. Blend until butter is completely incorporated and sauce thickens and becomes warm for about 1 minute.

3. Taste and adjust seasoning with salt if needed. Sauce is best if served right away.