Ingredients

9 hard-boiled eggs, peeled and chopped 

1/3 cup homemade or best-quality storebought mayonnaise, plus more for spreading 

1 medium celery stalk, diced 

3/4 teaspoon dry mustard, or 1 teaspoon Dijon mustard 

1/4 teaspoon mild Madras-style curry powder (optional) 

Coarse salt and freshly ground pepper 

8 to 12 slices whole-grain bread 

1 small head radicchio, leaves separated 

1 small bunch arugula, trimmed (optional) 

Preparation

Stir together eggs, mayonnaise, celery, dry mustard, and curry, if desired, in a medium bowl. Season with salt and pepper.

Spread one side of each slice of bread with mayonnaise. Top half of slices with radicchio, and arugula, if desired; spread with egg salad. Top with remaining bread.