Shrimp Salad on Sendik's Schiacciata Bun

We Have What You'll Need:

1¼ pound medium shrimp; peeled, deveined and cooked          
1 large celery stalk, peeled and finely chopped             
3 scallions, thinly sliced                                              
6 tablespoons mayonnaise                                  
Freshly ground black pepper   
1 tablespoon fresh lemon juice
1½ teaspoon prepared horseradish
1 teaspoon red wine vinegar
¼ teaspoon paprika
2 tablespoons unsalted butter, room temperature
1 tsp. salt
2 Sendik's Schiacciata Buns

Directions