Let ricotta cheese drain in a colander or cheesecloth, for at least 7 minutes.
In a mixing bowl, combine ricotta cheese, cream cheese, chopped chocolate chips, confectioners' sugar, granulated sugar, cinnamon and vanilla. Mix until well blended.
Fill cannoli shells using a pastry bag or spoon. You can dip the ends of the cannoli in melted chocolate, caramel sauce, or even jimmy sprinkles. You can also use all sorts of different flavorings for the filling. It's best to wait to fill the shells until just before serving, otherwise they can get soggy if they sit. Keep refrigerated. Enjoy!