Preheat oven to 375°F. Flatten each biscuit slightly on a baking sheet.

In a bowl, combine shrimp, crab, mozzarella, cream cheese, Old Bay, and parsley.

Spoon filling onto half the biscuits, then top with the remaining ones. Pinch edges to seal and press lightly.

Brush tops with melted butter and bake for 13–15 minutes or until golden brown.

Let them rest for 2 minutes, then slice or serve whole.