Deviled Eggs
8 hard-boiled eggs
1/4 cup mayo
1 Tbsp. onion, finely diced
1 tsp. Dijon mustard
1/4 tsp. salt
1 tsp. Halladay's Horseradish Seasoning
Halve eggs lengthwise. Remove yolks; set aside egg whites. Mash together yolks and remaining ingredients and pipe into reserved egg whites.