Best Darn Homemade Home Fried Potatoes

There was a diner in our town (Since out of business)
that served the most delicious home fried potatoes ever.
I got the cooks recipe and tweeked it up for home cooks.

Ingredients:
3 baking potatoes (2 lb),unpeeled
2 tbsp butter
1 onion, peeled and diced
1 tbsp chopped fresh rosemary (or 1/2 tsp/2 mL dried)
3/4 tsp each salt, pepper and sweet smoked paprika
1/4 cup whipping or heavy cream

Directions:
In saucepan of boiling salted water,
cover and cook potatoes just until tender, 20 to 25 minutes.
Drain and let cool. Cover and refrigerate for 4 hours.
(Make-ahead: Refrigerate for up to 2 days.)
Peel and cut potatoes into 1/2-inch pieces.
In large heavy skillet, melt butter over medium heat;
fry onion, stirring occasionally, until softened, 6 to 8 minutes.
Stir in potatoes, rosemary, salt, pepper and paprika;
fry, without stirring, until lightly browned on bottom, about 4 minutes. With spatula, turn and stir home fries.
Drizzle with cream; cook, without stirring,
until lightly browned on bottom, about 5 minutes.
Stir again; cook until most of the cream is absorbed
and potatoes are crusty and browned, about 2 minutes.