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1
Preheat oven to 450 degrees.
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2
Lightly grease a glass or ceramic loaf pan.
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3
Mix together all of the different cheeses.
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4
Set cheese mixture aside for later.
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5
Heat a large pan over medium heat.
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6
Add the butter and olive oil.
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7
Once the butter has melted and the oils are hot, add the shallot and garlic to the pan.
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8
Sweat the shallot and garlic for 4-5 minutes.
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9
Do not allow any caramelization, if they start to brown, reduce heat.
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10
Add the heavy cream and nutmeg to the pan and raise the heat to medium-high.
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11
Allow mixture to reduce for about 5-6 minutes.
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12
While the cream is reducing, place the thawed spinach into a clean dish towel and ring out as much of the water as you can.
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13
Add the spinach, nutmeg, and 1/2 of cheese mixture to the reduced cream.
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14
Stir to combine, then taste the creamed spinach.
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15
Season with kosher salt and freshly cracked black pepper, to taste.
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16
Pour the creamed spinach into the greased loaf pan.
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17
Sprinkle the remaining cheese mixture evenly over the top of the spinach, then do the same with the panko.
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18
Bake the gratin at 450 degrees for 10-15 minutes until the cheesey top layer is melty and golden.
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19
Serve hot and enjoy!
