Roasted Sweet Yam Soup

3 lbs. fresh yams1 lb. carrotsOlive oilSalt, red/black pepper to taste2 T. butter1 large Vidalia onion, chopped3 T. minced garlic6-8 fresh sage leaves1 bay leaf6 c. chicken stock, or as needed2 T. orange juice½ c. coarsely chopped roasted salted peanuts4…