Oranges and Vanilla

5 navel oranges
2 teaspoons vanilla extract
2 tablespoons granulated sugar

With a sharp knife, pare all peel and white pith from oranges. Cut oranges in half from navel to stem end. Pull away any white pith in center. Cut halves crosswise in thin slices. Put oranges in serving bowl. Add sugar and vanilla extract and toss to coat. Cover and chill for 24 hours before serving.