Preheat oven to 425 degrees F. Fill a large pot with water and bring to a boil. Cook cauliflower for 2 minutes. Remove and plunge in ice water; drain. Keep water boiling and cook macaroni until al dente; drain and set aside. While pasta cooks, press cloves into onion and let sit for 10 minutes.
In a medium-size pot over medium heat, bring milk and bay leaf to a simmer with clove-studded onion. In a medium heavy saucepan, melt butter over low heat. Mix in flour and cook for 2 minutes. Remove bay leaf and onion, then whisk milk into flour mixture; cook for 10 minutes more or until mixture comes to simmer. Add half the gruyere; pass mixture through a fine sieve. Add chives, red pepper sauce and nutmeg. Add salt, pepper & Worcestershire to taste.
Spread macaroni and cauliflower evenly in a 12x10 inch ovenproof dish, pour sauce over both, and sprinkle with remaining gruyere. Bake for 20 minutes.
Calories From Fat
% Daily Value*
Total Fat 0g
Saturated Fat 0g
Trans Fat 0g
Dietary Fibers 0g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.