Add chopped potatoes to a large pot of salted cold water.
Bring to a boil, then reduce heat slightly and simmer for about 20 minutes until potatoes are just fork tender. Drain potatoes.
(Optional step) Spread potatoes into an even layer on a sheet pan. Toast in a 350°F for 10-15 minutes. Dry potatoes will absorb the milk and cream better, resulting in super smooth potatoes.
Just before you're ready to mash the potatoes, warm butter and cream/milk in a saucepan until butter is melted.
Return potatoes to the pot and add half of butter mixture, salt and pepper. Use a potato masher to mash until mostly smooth. Add remaining butter mixture and mix till smooth. (For the lightest potatoes, do this final mixing with an electric mixer for about 30-60 seconds.) Be careful not to over work the potatoes, or they'll become gummy and thick.
Serve immediately or keep warm in a slow cooker for up to 4 hours.
- Peel potatoes if you want, or you can leave them on.
- Yukon golds will produce the best flavor and texture, but you can use russets or red potatoes if you really want to. (Russet potatoes will need to peeled.)
- To make more than 4 hours in advance: Place prepared mashed potatoes in a greased casserole dish and top with an additional 2 tablespoons of cubed butter. Cover with foil and store in the fridge for up to several days. To reheat, warm in a 350°F oven for 30 minutes. Stir until smooth and serve.
- Optional garnishes: Pats of butter, chopped chives or other herbs, and freshly cracked black pepper.
Calories: 252kcal, Carbohydrates: 30g, Protein: 7g, Fat: 13g, Saturated Fat: 8g, Cholesterol: 34mg, Sodium: 428mg, Potassium: 977mg, Fiber: 6g, Sugar: 2g, Vitamin A: 404IU, Vitamin C: 26mg, Calcium: 106mg, Iron: 7mg