Mom's Funeral Potatoes

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Are these called funeral potatoes across the board or just in Utah?  

These were the most delicious cheesy potatoes I have ever had, and it turns out my mom just kind of through them together.  I had her try to remember her recipe and this is what we came up with.  I had a pregnancy craving this morning and threw them together for lunch and plan to eat the whole pan.  By myself.  But over the course of a few days.  

{What you need}

1 large bag frozen hash brown potatoes

1 can cream of mushroom soup

1 can cream of chicken soup

1 cup sour cream

1/2 cup butter

1 tsp. onion powder

1 cup mozzarella cheese, shredded

1 1/2 cup cheddar cheese, shredded

Lightly grease a large casserole dish.  Pour the frozen potatoes into it and spread in an even layer.  Cream together the soups, butter, sour cream, and onion powder until all incorporated.  Mix in the cheeses and spread the mixture evenly over the potatoes.  Dig holes and throughout the mixture so that the cheese melts down into the potatoes, sort of stirring chunks of potatoes in with the cheese mixture.  Bake at 350 for 45 minutes.