Roasted Parsnip and Vanilla Chocolate Soup

Name: Roasted Parsnip and Vanilla Chocolate Soup
Ingredients: 2 pounds parsnips (about 4 or 5 large parsnips); 1/4 cup canola oil (2 tablespoons to brush on parsnips and 2 tablespoons to brush on bread for croutons); 8 tablespoons butter (1 stick or 1/2 cup); 1 large white onion, chopped; 2 quarts chicken stock; 1 whole vanilla bean, preferably Tahitian (sold 1 or two to a jar in the spice section of the store) or 1 tablespoon vanilla extract (preferably from real vanilla bean as opposed to artificial flavoring); Salt and pepper; 1 loaf French bread; 1 tablespoon canola oil; 1/4 cup dark cocoa powder; 1 cup vanilla white chocolate chips (recommended: Hershey's Premier White Chips); 1 cup heavy cream; 1 fresh lemon or lime, halved crosswise (1/2 to squeeze into batch of soup and 1/2 to cut into wedges to serve to guests); 2 tablespoons minced fresh dill leaves