Slow Cooker Top Round Roast with Potatoes & Vegtables

1 roast, trimmed of visible fat
2 cups beef broth (I used 2 cups water and 3 beef bouillon cubes)
3 tbsp. Worcestershire sauce
4 cloves of garlic
2 bay leaves
1 tsp. salt
1 tsp. sugar
½ tsp. pepper
1/2 tsp. steak seasoning
1/8 tsp. allspice
1 large onion, rough chopped
3 large carrots, sliced (or a couple of handfuls of baby carrots)
4 ribs celery, chopped
4 or 5 white potatoes and/or sweet potatoes, cut into bite size pieces
3 tbsp. cornstarch
1/4 cup water
How to make it:
Put roast trimmed of visible fat in large slow cooker. Add beef broth. Put Worcestershire, garlic and spices on top of meat. Add carrots, onion and celery around roast. Cook on low for 7- 8 hours total. Add potatoes about 3 hours into cooking. To thicken gravy, remove about 1 cup of hot liquid, using a separate bowl, combine ¼ cup water and cornstarch until smooth. Mix with a little hot liquid and return mixture to pot. Gently stir, turn crock pot to high and cook until thickened and bubbly. You may want to remove beef before thickening the gravy.