Tangy Crockpot Pork Chops

I got this recipe from a friend who had us over to dinner one time.  I thought this recipe was great!  It was the start of my using the crockpot.

4 pork chops                                                              
1/2 t salt
1/8 t pepper
med onion, sliced in strips
2 celery ribs, chopped
1 green pepper, sliced in strips                                             
1 can stewed tomatoes (14.5oz)

Sauce:
1 beef bouillion cube (or 1 T granuals)
2 T cider vinegar
2 T brown sugar
2 T Worchestershire sauce
1 t lemon juice
1/2 c ketchup


Thickener                                               
2 T cornstarch                                         
2 T water

1. Place pork chops in slow cooker, sprinkle with salt and pepper.  Add onions, celery, green pepper and tomatoes.
2. In a small bowl, combine sauce ingredients.  Pour sauce over veggies and chops.
3. Cover and cook on low for 5-6 hours if chops are thawed.  8-10 hours on low if frozen.
4. Mix thickener until smooth.  Stir into liquid in slow cooker.  If you don't stir well enough, it just goes to the bottom of the crockpot.
5. Cover and cook on High for 30 minutes.
6. Serve with hot cooked rice.