1 medium white onion chopped |
1 medium green bell pepper seeded and chopped |
1 small carrot peeled and grated |
1/2 pound fresh mushrooms sliced |
1/2 cup beef stock |
1 tablespoon soy sauce |
1 tablespoon dijon mustard |
1 tablespoon cornstarch |
1 teaspoon freshly ground black pepper |
4 baked potatoes |