Shrimp Po’ Boy Sandwich

Ingredients

• 1 1/4 cup light mayonnaise
• 1/4 cup Dijon mustard
• 3 tbsp sweet pickle relish
• 1/2 tbsp paprika
• 1 tbsp fresh chopped parsley
• 2 tsp prepared horseradish
• 1/2 tsp Creole seasoning
• 1/2 tsp hot sauce
• 2 cloves garlic, minced and smashed
• 2 green onions, thinly sliced and chopped
• 1/2 lemon, juiced
• 2 tsp capers, chopped
• 1 1/2 lb medium raw shrimp, peeled, deveined, tails off
• 1 cup buttermilk
• 1 large egg
• 1 1/2 cup flour
• 1/2 cup cornmeal
• 2 tsp garlic powder
• 2 tsp onion powder
• 1/2 tsp cayenne pepper
• 1/2 tsp ground black pepper
• 1/2 tsp paprika
• cooking oil
• 4 French rolls, split and hinged
• 4 tbsp melted butter
• 1/2 tsp garlic powder
• shredded Iceberg lettuce
• sliced tomatoes