Wash and peel potatoes. Cut potatoes into ½ inch to ¾ inch cubes. Rinse potatoes off, and pat dry with a paper towel.
Heat oil in a deep fryer to 350 degrees.
Prepare seasoned flour for potatoes by combining flour, onion powder, garlic powder, paprika, and cayenne pepper in a medium-sized bowl.
Drop potato chunks into the flour, and coat well. Shake off excess seasoned flour before placing into the deep fryer.
Deep fry for about 10 to 12 minutes or until the potatoes are golden brown. Remove potatoes from the fryer, and drain on wire rack.
Heat cheese sauce, pour 2 ounces of cheese sauce over seasoned potatoes, and top with 1 ounce dollop of sour cream.
Recipe Tips
Don't crowd the fryer. Potatoes that touch each other while frying will steam instead of crisping. Cut the cubes to a consistent size so they all finish cooking at the same time, and check the oil temperature between batches since it drops each time potatoes go in.