Applebee's Blackened Whitefish Sandwich with Kookaburra Sauce

Ingredients

2 filets, approximately 6 to 7 ounces
butter, as needed
Cajun/blackening seasoning, as needed
2 sandwich/burger buns
lettuce/tomatoes slices/red onion slices/pickles, as desired
Sauce
1 cup mayonnaise
3 tablespoons dill pickle relish
2 tablespoons minced green cabbage
2 tablespoons minced carrots
1 1/2 teaspoons prepared horseradish
2 tablespoons minced pimiento
2 tablespoons minced yellow onion
1 tablespoon fresh lemon juice
1 teaspoon fresh lime juice
1/2 teaspoon granulated sugar
1/4 teaspoon salt
1/4 teaspoon granulated garlic
1/2 teaspoon dry vermouth

Instructions

Sandwich: Brush both sides of tilapia filet with clarified butter (or butter flavored cooking oil) and sprinkle approximately five pinches of seasoning on each side. Place filet in a highly oiled fry pan or skillet on medium high heat and cook to an internal temperature of 145 degrees Fahrenheit. Served on toasted bun with garnishes as desired and Kookaburra Sauce (below) on your side.
Kookaburra Sauce: Stir or whisk ingredients in a bowl to blend. Adjust seasonings to taste (minced jalapenos are a nice addition for those who like it hot). Chill for at least one hour before serving. Shelf life is 48 hours.