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1
Bring a pot of salted water to a boil.
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2
Add the diced sweet potatoes, lower the heat to medium, and cook until the potatoes are soft, about 10 minutes.
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3
While the potatoes are cooking, briefly saute' the onion in the 2 tablespoons of butter.
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4
Put the sauteed onion, the egg, orange zest, half and half, and orange juice in a mixing bowl.
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5
When the potatoes are soft, drain quickly and briefly in a colander and put the warm potatoes immediately into the mixing bowl.
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6
Mix the ingredients together.
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7
The potatoes will remain a bit lumpy.
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8
Set aside to cool for 15 minutes.
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9
Preheat the oven to 400 degrees F.
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10
When the sweet potatoes are cool, form the mixture into 12 loose cakes.
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11
Combine the crushed cookies and potato chips, gently toss each cake in the crumbs, and refrigerate.
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12
Put the cakes on a buttered baking sheet, drizzle with the melted butter, and bake for 8 minutes to reheat and crisp the outside.
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13
Serve hot.