Creamed Spinach and Potato Casserole
"Bring two classic steakhouse side dishes right into your own kitchen...."
INGREDIENTS
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2 russet potatoes, sliced ¼ inch thick
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1 (10 oz) package frozen spinach, thawed and drained
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1 large yellow onion, diced
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1 tablespoon olive oil
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½ cup sour cream
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½ cup mayonnaise
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2 large eggs, beaten
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1 teaspoon garlic powder
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1 teaspoon kosher salt
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½ teaspoon black pepper
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1 teaspoon cayenne (optional)
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½ cup Parmesan cheese, grated
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½ cup Romano cheese, grated
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1 cup mozzarella cheese, grated
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