Chicken with grain

7 cups chicken stock (preferably homemade) 2 medium carrots , cut into 1/4 inch dice 2 celery ribs , cut into 1/4 inch dice 1 onion , cut into 1/4 inch dice 4[...]

2 tablespoons olive oil 1 onion 1 spaghetti squash 2 cups mushrooms 1 head garlic 2 tomatoes , quartered 2 medium baking potatoes , quartered 1/2 cup bulgur ,[...]