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Preheat your oven to 365°F. Finely chop the fresh sage, rosemary, and parsley. Set aside.

In a small saucepan over medium-low heat, melt the unsalted butter into the half-and-half. Stir gently until combined and warm, but do not boil. Remove from heat.

Generously grease a 9x13 inch cast iron skillet or similar baking dish with neutral oil or additional butter to prevent sticking.

Begin layering the ingredients in the prepared skillet. Start with an even layer of about one-third of the shredded potatoes. Season generously with kosher salt and freshly ground black pepper. Sprinkle with about one-third of the chopped fresh herbs. Add a layer of about one-third of the shredded cheddar and mozzarella cheese, followed by a layer of about one-third of the grated Parmesan Reggiano. Repeat these layers two more times until the skillet is full, ensuring no single layer is excessively thick and ending with cheese.

Carefully pour the warm melted butter and half-and-half mixture evenly over the layered potatoes and cheeses, ensuring it seeps down into the layers.

Add a final, generous layer of the remaining shredded cheddar and mozzarella cheese, followed by the remaining grated Parmesan Reggiano on top.

Cover the skillet tightly with aluminum foil. Bake in the preheated oven at 365°F for 30 minutes.

Remove the foil. Reduce the oven temperature to 350°F. Bake uncovered for an additional 30 minutes, or until the top is golden brown, bubbly, and the potatoes are tender when pierced with a fork.

Remove the dish from the oven and let it sit for 2-3 minutes to cool slightly and allow the cheese to set. Garnish with fresh chopped chives before serving.


Preheat your oven to 365°F. Finely chop the fresh sage, rosemary, and parsley. Set aside.

In a small saucepan over medium-low heat, melt the unsalted butter into the half-and-half. Stir gently until combined and warm, but do not boil. Remove from heat.

Generously grease a 9x13 inch cast iron skillet or similar baking dish with neutral oil or additional butter to prevent sticking.

Begin layering the ingredients in the prepared skillet. Start with an even layer of about one-third of the shredded potatoes. Season generously with kosher salt and freshly ground black pepper. Sprinkle with about one-third of the chopped fresh herbs. Add a layer of about one-third of the shredded cheddar and mozzarella cheese, followed by a layer of about one-third of the grated Parmesan Reggiano. Repeat these layers two more times until the skillet is full, ensuring no single layer is excessively thick and ending with cheese.

Carefully pour the warm melted butter and half-and-half mixture evenly over the layered potatoes and cheeses, ensuring it seeps down into the layers.

Add a final, generous layer of the remaining shredded cheddar and mozzarella cheese, followed by the remaining grated Parmesan Reggiano on top.

Cover the skillet tightly with aluminum foil. Bake in the preheated oven at 365°F for 30 minutes.

Remove the foil. Reduce the oven temperature to 350°F. Bake uncovered for an additional 30 minutes, or until the top is golden brown, bubbly, and the potatoes are tender when pierced with a fork.

Remove the dish from the oven and let it sit for 2-3 minutes to cool slightly and allow the cheese to set. Garnish with fresh chopped chives before serving.
