"This is a salad of love," Michael says. “Alex [Gaurnaschelli] loves endive and I love grapefruit. The vanilla in the dressing mellows out the sharper edges of the grapefruit, and the toasted cashews add an almost creamy note.”
Preheat the oven to 350˚ F. Spread the cashews in a single layer on a baking sheet and toast in the middle of the oven until the nuts are golden brown, 5 to 8 minutes. Sprinkle with salt.
Make the vinaigrette: Grate the zest from 1/2 grapefruit (reserve the fruit) and juice 1 grapefruit. In a blender, combine the grapefruit zest and juice, mustard, honey, vinegar and vanilla on high speed. With the machine on, pour the olive oil through the top in a steady stream. Blend until smooth.
Make the salad: Peel the reserved 1/2 grapefruit and cut into segments. Arrange the endive leaves on plates. Intersperse the endive with the grapefruit pieces and cashews. Drizzle with the vinaigrette. Sprinkle with a pinch of salt.