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1
TO SERVE HOT AS A CASSEROLE; grease a 13 x 9-inch baking dish (or use a casserole dish that will hold the mixture).
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2
Set oven to 350 degrees F.
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3
In a large bowl, mix mayonnaise, sour cream and melted butter, garlic powder, seasoned salt and black pepper until well combined.
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4
Mix in green onion and yellow onion.
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5
Add in the cooked cubed potatoes, cubed cheese and ham (if using) mix with a large spatula until well combined.
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6
Transfer/spread the mixture to prepared casserole dish.
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7
At this point you may cover and refrigerate for up to 24 hours until ready to bake.
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8
Bake 25-30 minutes or until hot and bubbly.
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9
Remove from oven and sprinkle the grated cheddar on top; return to oven and bake 5-8 minutes more or until the cheese has melted.
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10
TO SERVE AS A COLD POTATO SALAD; make as stated in steps 3-5 reducing the melted butter to 2 tablespoons.
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11
Place in a bowl, cover and refrigerate for at least 4 hours or more before serving.
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12
DELICIOUS!