Pot Roast with Vegetables

I made this about a month ago for the first time. At the time, Tom was out of town, so my parents came over for dinner. My Dad proclaimed this the best pot roast he'd ever eaten. We'll see what Tom says when he tries it tonight! If he's lucky, I'll make some rosemary focaccia to go with it.

1 (3 to 4 pound) piece beef chuck roast
Salt and freshly ground black pepper
3 tablespoons olive oil
1 can crushed tomatoes
2 yellow onion, halved
2 garlic cloves, chopped
1 bunch baby carrots
2 celery stalks, sliced
2 sprigs fresh rosemary
4 sprigs fresh thyme
2 bay leaves

Season all sides of the beef with a fair amount of salt and pepper. In a large Dutch oven or other heavy pot; heat the oil over moderately high heat. Brown the meat on all sides, taking the time to get a nice crust on the outside.

Meanwhile, pour the tomatoes in your crock pot. Add the vegetables and herbs around the sides of the pot. Once your meat is browned, transfer it to the crock pot. Cook on low for 6 to 8 hours.