Mashed potato, tuna, paprika, garlic, onion and more combine to make this fantastic tuna croquette recipe. Tuna croquettes are easy party appetizers and they are perfect if you want to make hot seafood appetizers for a buffet or another kind of event. This tuna croquette recipe is simple to make and it goes beautifully with a creamy dipping sauce - perhaps a chili sauce recipe or a lemon mayonnaise recipe.