How to Make It
Heat a skillet over medium-high. Add oil and potatoes; cook 6 minutes. Cover, reduce heat to medium, and cook 6 minutes. Sprinkle potatoes with salt.
Combine milk and flour in a saucepan, stirring; bring to a boil. Cook 1 minute. Add blue cheese. Cook 1 minute. Top potatoes with sauce, walnuts, and parsley.