My own adaptation on a couple recipes, using soy milk and non dairy margarine, that I want to be able to do again sometime without a search for other people's recipes. The measurements for the filling are TOTAL guesses.
For the filling, I started with a mixture 6 T of white sugar and 1 1/2 T of cinnamon (oops now I see the recipe said tsp not Tbsp) but also added a few T of brown sugar. The yield was definitely not enough for the generous fill I wanted, so I just dumped in more of everything. Maybe next time I make this, I'll pay more attention to the ratios I use.
For the glaze, the main recipe I was using called for "1 or 2 cups of thin powdered sugar drizzle." I started with a random amount of soy milk and melted margarine and basically slowly added all the powdered sugar I had. I think it was around 1/3 to 1/2 the package I had from Whole Foods, however much that was. Then added a generous cap full of vanilla and a small dollop of almond extract. Too much!