In a large saucepan, place eggs in a single layer; add water to a depth of 3 inches. Bring to a boil over medium-high heat. Cover, remove from heat, and let stand for 15 minutes. Drain immediately, and fill saucepan with cold water and ice. Let stand until cool. Tap eggs firmly on counter until cracks form all over shell. Peel under cold running water. Chop eggs.
In a large bowl, combine mayonnaise, mustard, capers, chives, vinegar, paprika, and pepper. Gently fold chopped egg into mayonnaise mixture.
Spread ½ cup egg mixture on each toast slice. Garnish with radish sprouts, if desired.
Notes
Kitchen Tip: Add ½ teaspoon baking soda to the cooking water to make peeling the eggs easier. Place a wire rack over a bowl and push boiled eggs through the rack for a quick dice with less clean up.
Recipe by Southern Lady Magazine at https://southernladymagazine.com/open-faced-egg-salad-sandwiches/