Easy Potato Tuna Cakes Recipe with Mashed Potatoes

Ingredients

• ½ pound Yukon gold potatoes (peeled and cut into 1-inch cubes)
• salt ( to taste)
• 2 5- ounce cans tuna (packed in water, drained)
• 1 ½ cups panko breadcrumbs (divided)
• 1 egg
• 1 small shallot (finely chopped)
• 2 tablespoons chopped dill (plus more for garnish)
• ½ teaspoon black pepper
• 4 tablespoons avocado oil (divided)
• Lemon wedges (for serving)
• Tzatziki sauce (for dipping)