Chantilly Mashed Potato Casserole

Follow our step-by-step guide on how to make Chantilly Mashed Potato Casserole.

1. Step 1

   Start by gathering all your ingredients to ensure a smooth cooking experience.

2. Step 2

   Preheat your oven to a sizzling 475°F (245°C) to get it ready for the deliciousness to come.

3. Step 3

   In a large pot, toss in your quartered potatoes and cover them with cold water, making sure the water level is about 2 inches above the potatoes.

4. Step 4

   Sprinkle in 2 tablespoons of kosher salt and bring it to a boil over high heat.

5. Step 5

   Once it’s bubbling away, reduce the heat to medium and let the potatoes simmer until they’re tender, which should take about 15 to 20 minutes depending on their size.

6. Step 6

   After they’re cooked, drain the potatoes in a colander and let them sit for 5 to 10 minutes to get rid of any excess moisture.

7. Step 7

   Now, it’s time to mash! Transfer the drained potatoes to a large mixing bowl and use a potato masher to mash them until they’re smooth and free of lumps.

8. Step 8

   Add in the cubed butter, a pinch of kosher salt, and the grated Gruyere cheese, mixing everything together until it’s well combined.

9. Step 9

   For a little kick, sprinkle in a pinch of cayenne pepper, along with 3/4 cup of Parmigiano-Reggiano cheese and some buttermilk.

10. Step 10

    Stir until everything is evenly mixed, and don’t forget to taste and adjust the salt if needed.

11. Step 11

    In a separate metal bowl, whisk the cold heavy cream until it thickens and forms stiff peaks, which should take about 1 to 2 minutes.

12. Step 12

    Gently fold half of this whipped cream into your potato mixture using a spatula to lighten it up.

13. Step 13

    Then, carefully fold in the remaining whipped cream until just combined, being mindful not to deflate all that airy goodness.

14. Step 14

    Next, transfer your fluffy potato mixture into a well-buttered casserole dish, spreading it out gently with a fork.

15. Step 15

    If you like, smooth the top with a spoon for a polished look.

16. Step 16

    Sprinkle the remaining 1/4 cup of Parmigiano-Reggiano cheese on top and give it a light dusting of cayenne pepper for an extra touch of flavor.

17. Step 17

    Place the casserole dish on a baking sheet and pop it into your preheated oven.

18. Step 18

    Bake for 15 to 20 minutes, or until the top is beautifully browned and inviting.

19. Step 19

    Once it’s out of the oven, sprinkle some sliced green onions on top for a fresh finish before serving.

20. Step 20

    Enjoy the delightful flavors and creamy texture of your homemade mashed potato casserole—it’s sure to be a hit at your table!.