INGREDIENTS
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1 1/2 Tablespoons unsalted butter, plus extra to grease the baking dish
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2 teaspoons of olive oil
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8 oz fresh spinach, washed, dried, and stemmed
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1/2 lb of Italian sausage (we like 1/2 sweet and 1/2 hot Italian sausage), broken out of casing into small pieces
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1 large red onion (about 3/4 lb), peeled and sliced thin
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1 small garlic clove, minced
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1 1/2 pounds russet potatoes (about 3 medium sized potatoes), peeled and cut into 1-inch chuncks
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1/3 cup heavy cream
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1 Tablespoon cider vinegar
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Dash of nutmeg
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1/2 teaspoon of salt
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1/4 teaspoon pepper
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1 cup of shredded Gruyere or Swiss cheese