1. In a slow-cooker or a crock pot layer squash alternately with scallions, peppers and tomatoes.
2. Sprinkle with salt after every layer.
3. Pour the bouillon over the vegetables.
4. Combine the bacon and breadcrumbs and sprinkle over the top.
5. Cover the pot with its lid.
6. Slow cook the squash on HIGH for about 3 hours or if you are not in a hurry and want to serve them for dinner, cook on LOW for about 6 hours.
7. Drain the bouillon into a bowl and reserve it for soup or stew.
8. Spoon vegetables into serving dish
9. Serve hot as a side dish.