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Instructions:
- Preheat the oven to 400°F (200°C). Slice the top off the garlic bulb, drizzle with olive oil, wrap in foil, and roast for 30 to 35 minutes, until soft and golden.
- Place the potatoes in a large pot, cover with cold salted water, and bring to a boil.
- Cook the potatoes for 15 to 20 minutes, until fork-tender. Drain thoroughly.
- Squeeze the roasted garlic cloves from their skins directly into the pot with the potatoes.
- Add the butter and mash until mostly smooth.
- Slowly stir in the warm cream and sour cream, mixing until ultra-creamy and silky.
- Season with salt and pepper, adjusting butter or cream as needed.
- Mash or gently whip until smooth, being careful not to overwork the potatoes.
- Serve hot with extra melted butter on top and garnish if desired.
Variations
- Add cream cheese for an even richer, thicker mash.
- Substitute half-and-half for a lighter version.
- Stir in grated Parmesan for a savory finish.
- Use roasted shallots along with garlic for extra depth.
Tips
- Always start potatoes in cold water for even cooking.
- Warm the cream before adding to keep the potatoes fluffy.
- Avoid overmixing, which can make the potatoes gluey.
- Russet potatoes produce the smoothest steakhouse-style texture.