Preheat oven to 425 degrees.

In a dutch oven or roasting pan, place roast and cover loosely with a piece of foil. You want air to be able to circulate.

Place in the oven at 425 degrees and bake for 30 minutes. Then turn the heat down to 350 degrees and bake for 2 hours or until it reaches desired doneness.

Allow meat to rest for 15 minutes.

While meat rests, in a large sauce pan, saute the onion in butter until translucent. Then add in the ketchup, sugar, Worcestershire sauce, and bbq sauce. Cook until sugar is dissolved and sauce is heated.

Slice or shred beef and serve with sauce. If shredded, I like to mix in the sauce. Serve on buns or rolls. Serves 12.