Peel Yukon Gold potatoes and cut into quarters. Put in a pot with cold water and bring to a boil.

Once the water boils, reduce heat to a low simmer and cover the pot. Cook the potatoes for 15-20 minutes, until tender when you poke them with a fork.

Drain the boiled potatoes and transfer to a bowl.

Using a potato masher, mash the potatoes along with heavy cream, butter, garlic salt, and pepper.