Roast & vegetables

2 lb Chuck Roast, cubed
1 tsp. Salt
1/8 tsp. Pepper
1 large Onion, cut into 8ths
1 bag Baby Carrots
1/2 tsp. Celery or Onion Salt
1 tsp. Italian Seasoning
1 (4 oz) can Mushrooms, Sliced (do not drain)
2 cans Tomato Soup, condensed
2 cubes beef bullion, softened
1 can Rotel Tomatoes
1 can Whole Kernel Corn, drained
6-8 small Red Potatoes, cubed