Step 1

Simmer whole potatoes in salted water until tender, about 20-30 minutes, and cook eggs using preferred method for hard boiled. Drain and set aside to cool.

Step 2

Whisk together the mayonnaise, mustard and sugar until sugar is dissolved. Set aside.

Step 3

Peel potatoes and eggs. Slice thinly using box grater over large bowl, alternating potatoes and eggs (slice a potato then slice an egg until everything is sliced). Season with salt and pepper and add diced onions to bowl.

Step 4

Add dressing mixture to potatoes and eggs and mix gently until well combined. Refrigerate several hours or overnight for best flavor!