Great tasting pot roast

I found this on the internet and have made it twice.  Just fantastic!

Start with a good quality roast of beef that is completely thawed.  Rub all sides with a mixture of salt, pepper, and garlic powder.

Preheat oven to 550 - yes, you read that right!  Except my oven only goes to 500!

Place prepared roast in an open baking dish.  Bake at:

5 minutes per pound for rare or 6 minutes per pound for medium (pink center)

Turn the oven off but don't open the door for 2 hours.  Actually, I left it closed for an hour and 45 minutes.

The rub makes a fine crust that is delicious.  I prefer a pink center.