To a large bowl, add egg and beat lightly with a whisk
Add water, ranch, onion and garlic powder and whisk
While continuously whisking, add instant mashed potatoes and mix well.
Add ham and green onion while it is still thin and mix to combine.
Let sit about 5 minutes for the potatoes to thicken.
Stir one more time because ham may have settled to the bottom.
Shape 2 Tablespoons of the mixture into a ball, then flatten into the shape of a potato cake.
If the cakes stick to your hands, it can help to moisten your hands with water before shaping the cakes.
Fry in avocado oil (or other high smoke point oil like peanut oil) on medium to medium-high heat, checking for brownness after 2 minutes on each side. I use 2 Tablespoons avocado oil in my small frying pan.
See the picture above to see how you can push the cake toward the edge of the pan with your spatula to make it easy to check for brownness and to flip them over.
Recipe yield is 12 potato cakes.
Garnish with sour cream and green onion.