A crunchy exterior that leads to soft potato and tuna with a warm melted cheese center, these havarti tuna melt cakes are inspired by the classic tuna melt sandwich.
Using a fork, pierce the skin of the the potatoes all over.
Microwave each potato for 2 minutes, turn and microwave for 2 minutes until the skins start to wrinkle and the potatoes are soft. Set aside and allow to cool.
To a large mixing bowl add the potato and mash until smooth. Add the tuna and mix well. Add the lemon zest and lemon juice, mustard, mayonnaise, green onions, corn, salt and pepper.
Form the mixture into 6 even-size cakes (like crab cakes). Use your finger to make a deep well in the center of the cakes and place a cube of cheese.
Re-form the cakes so the cheese is well covered. Refrigerate for 30 minutes to allow the cakes to set.
Add the egg and panko to shallow bowls. Dip the patties into the egg, then into the panko to coat evenly.
Add oil to a cast iron skillet or heavy frying pan and heat over medium heat until it starts to ripple. Add the patties and cook for 2 minutes each side.
Make the sauce:
Add the the mayonnaise and lemon to a small mixing bowl and mix well. Drizzle over the finished cakes.