Place all of the corned beef ingredients into a slow cooker.
Cook for 8 hours until tender, but not falling apart.
Remove the beef from the slow cooker and let cool slightly.
Wrap tightly in foil and refrigerate overnight.
Preheat your oven to 350 F.
Unwrap the beef and place in a 9" x 13" baking dish that has been sprayed with non-stick spray.
Combine the glaze ingredients and pour over the top of the corned beef.
Bake for 30 minutes.
Remove and slice. Drizzle with any glaze left in the baking dish or double the glaze and warm the remaining before pouring over the beef.