01 -
Place eggs in a pot and cover with cold water. Bring to a boil over medium-high heat, then remove from heat and let stand covered for 12 minutes. Transfer eggs to an ice bath to cool completely, then peel.
02 -
Pat shrimp dry and season with half the Cajun seasoning. Heat a skillet over medium-high heat; sear shrimp until cooked through and golden, about 2 minutes per side. Set aside.
03 -
Halve eggs lengthwise and remove yolks. Mash yolks with mayonnaise, Creole mustard, horseradish, hot sauce, pickled jalapeños, remaining Cajun seasoning, and half the green onions until smooth.
04 -
Pipe or spoon yolk mixture into egg whites. Top each with a seared shrimp and garnish with remaining green onions.
05 -
Refrigerate assembled eggs for 15-30 minutes to allow flavors to meld and filling to firm up before serving.