Boil the potatoes until tender.

Cube the boiled potatoes.

Chop the onion.

Cook bacon until crisp, then crumble or chop into bits.

In a large bowl, combine the cubed potatoes, chopped onion, and crisp bacon bits.

Add the mayonnaise and mustard to the bowl.

Mix all ingredients well until combined.

Serve immediately or chill before serving for enhanced flavor.