Every Thanksgiving table has that one side dish people quietly fight over, and this year it might be the mashed potatoes. These boursin mashed potatoes take everything you love about classic mash — silky, buttery, pillowy — and upgrade it with a single genius ingredient: a whole package of Boursin Garlic & Fine Herbs cheese. It melts straight into hot Yukon Golds and delivers garlic, herbs, salt, and tangy richness in one step, no mincing, no measuring a spice drawer. The result tastes like you simmered cream with a bouquet of herbs all afternoon, when really the whole dish takes about 40 minutes and five main ingredients.
If you have ever stood over a pot on Thanksgiving Day wondering how to make the potatoes taste special without adding another task to an overloaded schedule, this is your answer. The cheese does the seasoning work, the mash makes ahead beautifully, and a buttered slow cooker keeps it warm for hours while the turkey rests and the gravy comes together.
Why This Recipe Works
One package replaces a whole seasoning lineup. Boursin Garlic & Fine Herbs is a soft, spreadable cheese already blended with garlic, parsley, chives, and a touch of tang. Melted into hot potatoes, it seasons the entire bowl evenly — every spoonful tastes finished, with none of the raw-garlic bite or uneven herb flecks you get from seasoning by hand.
Yukon Golds are built for silk. Their naturally buttery flavor and medium starch content mash up creamy without turning gluey, which is exactly what you want when a rich cheese is going in. Russets can work, but they drink up more cream and need a lighter hand to stay fluffy.
Warm dairy keeps the mash glossy, not gummy. Pouring cold milk or cream into hot potatoes shocks the starch and dulls the texture. Warming the cream with the butter first means everything blends at the same temperature, so the mash stays loose, shiny, and hot all the way to the table.
Ingredients
Potatoes — 3 pounds Yukon Gold potatoes, peeled and cut into 2-inch chunks; 1 tablespoon kosher salt, for the cooking water. Mash — 1 package (5.2 ounces) Boursin Garlic & Fine Herbs cheese, at room temperature; 4 tablespoons unsalted butter; 3/4 to 1 cup heavy cream or whole milk, warmed; 1/2 teaspoon kosher salt, plus more to taste; 1/4 teaspoon white pepper. To serve (optional) — 2 tablespoons chopped fresh chives; 2 tablespoons brown butter, for drizzling; a few crispy sage leaves.
How to Make Boursin Mashed Potatoes
1. Boil the potatoes until truly tender. Put the potato chunks in a large pot, cover with cold water by 2 inches, and add the tablespoon of kosher salt. Bring to a boil over high heat, then reduce to a steady simmer and cook 18 to 22 minutes, until a knife slides through a chunk with no resistance at all. Undercooked potatoes are the number one cause of lumpy mash, so do not rush this step.
2. Warm the butter and cream together. While the potatoes cook, warm the cream and butter in a small saucepan over low heat until the butter melts. Keep it warm, not boiling — you want it to blend into the potatoes at nearly the same temperature they are.
3. Drain and dry the potatoes. Drain the potatoes well, then return them to the hot pot for 1 minute over low heat, shaking the pot once or twice. This steams off surface moisture, and dry potatoes absorb butter far better than wet ones.
4. Mash with the Boursin. Push the potatoes through a ricer or mash them with a hand masher right in the pot. Crumble in the room-temperature Boursin and pour in half of the warm butter-cream. Mash and stir until the cheese melts in completely and the mash turns silky and glossy.
5. Adjust the texture and season. Add the remaining warm cream a splash at a time until the mash is as loose as you like it — some people love a thick, scoopable mash, others want it almost pourable. Season with the 1/2 teaspoon salt and the white pepper, then taste and adjust. Boursin is already salty, so you may not need another pinch.
6. Serve warm and glossy. Spoon the mash into a warm serving bowl and make a swirl on top with the back of a spoon. Drizzle with brown butter if you are using it, shower with chives and crispy sage leaves, and serve immediately while the swirl is still glossy.
Tips for the Silkiest Mash
Bring the Boursin to room temperature. Cold cheese straight from the fridge melts unevenly and leaves little white flecks through the mash. Set it on the counter when you start peeling the potatoes and it will be perfect by mashing time.
Never use a food processor or a mixer on high. Overworking potatoes bursts their starch cells and turns the mash gluey and stretchy. A ricer gives the silkiest result; a hand masher is a close second.
Salt the cooking water generously. Potatoes absorb seasoning as they cook, and unsalted water makes a bland mash no amount of finishing salt can fully fix.
Keep everything warm. Warm bowl, warm cream, warm butter — a cold bowl can drop the temperature of the whole dish before it reaches the table.
Taste before adding more salt. Boursin brings its own salt, garlic, and herbs. Season at the end, not at the start, so you do not overshoot.
Variations
Brown butter and crispy sage — Brown the butter first until it smells nutty, and fry sage leaves in it for 30 seconds. Drizzle over the top for a restaurant finish.
Roasted garlic version — Swap half the Boursin for a head of roasted garlic squeezed into the mash — deeper, sweeter, and even more Thanksgiving-worthy.
Cheddar and chive twist — Use Boursin Shallot & Chive instead of Garlic & Fine Herbs and fold in a handful of shredded sharp white cheddar for a sharper edge.
Lighter everyday mash — Use whole milk instead of cream and skip the brown butter drizzle; the Boursin still carries all the flavor.
Loaded mashed potato bar — Set out the mash with bacon crumbles, extra chives, shredded cheddar, and sour cream so everyone builds their own bowl.
Storage and Make-Ahead
This is one of the best make-ahead sides on the Thanksgiving menu. Mash up to 2 days ahead, cool completely, and refrigerate in an airtight container. Reheat gently in a saucepan over low heat with a splash of warm cream, stirring until silky again — or in a slow cooker on low for about 2 hours, stirring once halfway through.
A buttered slow cooker on the warm setting holds the finished mash perfectly for up to 2 hours on Thanksgiving Day, which frees a burner and keeps the potatoes hot while the turkey rests. Leftover mash keeps in the refrigerator for up to 4 days and reheats the same way, with a splash of warm cream. It also freezes well for up to 2 months; thaw overnight in the refrigerator before reheating. Leftover mashed potatoes make excellent potato cakes, shepherd’s pie topping, or a quick soup thickener.
Frequently Asked Questions
What is Boursin cheese? Boursin is a soft, creamy French cheese blended with garlic and fine herbs — the Garlic & Fine Herbs version combines garlic, parsley, and chives with a mild tang. It comes in a 5.2-ounce foil-wrapped round in the specialty cheese section of most grocery stores, and it melts beautifully into hot potatoes.
Can I make boursin mashed potatoes ahead of time? Yes, and they are made for it. Mash up to 2 days ahead and refrigerate, then reheat gently with a splash of warm cream until silky. Or hold the finished mash in a buttered slow cooker on warm for up to 2 hours on the day itself.
Do I need a ricer for smooth mashed potatoes? A ricer gives the smoothest, most lump-free result, but a hand masher works well too if the potatoes are cooked fully tender. What matters most is never using a food processor or beating the potatoes on high speed, which turns them gluey.
Can I use russet potatoes instead of Yukon Golds? Yes. Russets mash up fluffy and light, but they absorb more liquid, so start with the full cup of warm cream and add more as needed. Yukon Golds stay silkier and more naturally buttery, which is why they are the first choice here.
What main dishes go with boursin mashed potatoes? Almost anything roast-worthy: herb butter roast turkey breast, roast chicken, beef tenderloin, or glazed ham. The garlicky, herby mash is especially good next to rich gravy, since it holds its flavor instead of disappearing under it.
Boursin Mashed Potatoes
Equipment
- Large pot
- Potato ricer or hand masher
Ingredients
Potatoes
- 3 pounds Yukon Gold potatoes peeled and cut into 2-inch chunks
- 1 tablespoon kosher salt for the cooking water
Mash
- 1 package Boursin Garlic & Fine Herbs cheese 5.2 ounces, at room temperature
- 4 tablespoons unsalted butter
- 3/4 to 1 cup heavy cream or whole milk warmed
- 1/2 teaspoon kosher salt plus more to taste
- 1/4 teaspoon white pepper
To serve (optional)
- 2 tablespoons chopped fresh chives
- 2 tablespoons brown butter for drizzling
- A few crispy sage leaves
Instructions
- Boil the potatoes: put the potato chunks in a large pot, cover with cold water by 2 inches, and add the tablespoon of kosher salt. Bring to a boil over high heat, then reduce to a steady simmer and cook 18 to 22 minutes, until a knife slides through a chunk with no resistance.
- Warm the dairy: while the potatoes cook, warm the cream and butter together in a small saucepan over low heat until the butter melts. Keep it warm — cold dairy cools the mash and makes it seize.
- Drain and dry: drain the potatoes well, then return them to the hot pot for 1 minute over low heat, shaking the pot once or twice, to steam off surface moisture. Dry potatoes absorb butter better.
- Mash with the Boursin: push the potatoes through a ricer or mash with a hand masher right in the pot. Crumble in the room-temperature Boursin and pour in half the warm butter-cream. Mash and stir until the cheese melts in and the mash turns silky.
- Adjust the texture: add the remaining warm cream a splash at a time until the mash is as loose and glossy as you like it. Season with the 1/2 teaspoon salt and the white pepper, then taste and adjust — Boursin is salty, so you may not need more.
- Serve: spoon into a warm serving bowl, make a swirl on top with the back of a spoon, and drizzle with brown butter if using. Shower with chives and crispy sage leaves and serve immediately.