Place your mashed potatoes, eggs, cheese, and 1/2 cup of flour into a large bowl. Stir until WELL combined. 3 cups mashed potatoes, 3 large eggs, 1 cup shredded cheddar cheese, 1/2 to 1 cup all purpose flour
Gradually add up to one more cup of flour until the potato mixture becomes thick enough to hold their shape on the griddle.
Heat a large skillet with about 1/4" oil in the bottom over medium high heat. vegetable oil
Once the oil is hot, drop the batter by 3/4 cup full (or smaller if you'd like) into the oil. Use a spoon to spread slightly into a round "pancake".
Cook until the pancake is golden brown on one side. Then flip and continue to cook until the patty is golden brown on the second side and cooked through.
Place a wire rack on a baking sheet. As you remove the potato cakes, place them on the wire rack so any extra oil drips down and they don't get soggy.
Top with sour cream and green onions. Serve immediately.
Store leftovers in an airtight container in the refrigerator for up to 3 days.
Try reheating in an air fryer oven for best results.
The calories shown are based on the recipe making 9 cakes, with 1 serving being 1 potato pancake. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**