Wash the potatoes and peel them. Cut them into 2 inch cubes.
In a heavy bottom pot add enough water to cover the potatoes, at least 2 inches over and give yourself enough room for the water to boil, another 2 inches.
Add the one tablespoon of salt and bring to a boil over medium-high heat.
Cook until potatoes are fork tender, about 15-20 minutes.
While the potatoes are cooking, melt ½ cup of butter in a sauce pan over medium-low heat.
Add the heavy whipping cream and the wheel of Boursin cheese. Use a wooden spoon to break down the cheese and mix until well combined.
Once the potatoes are fork tender, drain the water and return them to the pot.
Mash the potatoes or run them through a potato ricer (my preferred method)
Slowly add the warm cream mixture and mix with a wooden spoon until just combined.
Taste for salt and pepper.
In another sauce pan, melt the other ½ cup of butter over medium heat stirring constantly until brown specs start forming at the bottom of the pan.
When amber/brown bits start forming, remove the butter from the heat and transfer immediately to a heat-proof container such as a glass jar. Allow it to cool down slightly.
Serve the mashed potatoes and create some crevices with a spoon or spatula to drizzle the brown butter.
Add thyme sprigs and sage to serve.