In a bowl, mix together mashed potatoes, chopped spinach, chopped carrots, parmesan cheese, flour, cayenne pepper, dried oregano, salt, and pepper.
Mix till ingredients come together as a dough.
Make 8 equal sized cakes from the dough. Use an ice cream scoop to make equal sized cakes. Place panko bread crumbs on a plate and set aside.
Heat oil in a pan on medium heat. Once oil is hot, roll the cakes into panko bread crumbs and then put them in to the hot oil.
Cook for 2-3 minutes on each side, or till nicely golden brown in color.
Remove from pan and drain on a kitchen towel.