Not exactly low-fat, but the first asparagus of the spring deserves this.
Ingredients:
4 egg yolks
2 Tbsp lemon juice
1/2 tsp salt
Dash or two of Tabasco sauce
1/2 cup unsalted butter (1 stick), heated until bubbling
SLOWLY add bubbling melted butter to food processor while running.
Butter MUST be bubbling hot or the sauce won't cook.
Hint: Contrary to popular belief, you can reheat Hollandaise sauce if you're really careful. Heat it in a glass bowl in the microwave for 10 to 15 seconds at a time at 20%, stirring thoroughly, and letting it rest for 10 to 15 seconds between zappings.