First prepare the orange syrup by combining the water, orange juice, sugar & cinnamon stick in a small sauce pot & bring to a boil, stirring to dissolve the sugar. Let boil at a low simmer for 5 minutes. Remove from heat
Separate the sheets of phyllo then crumple them up on a large baking tray & bake at 350℉ for approximately 5-8 minutes or until golden browned & crispy
Remove from oven & crush into pieces~ reserve
Keep the oven set to 350℉ & grease & parchment line a 9" x 9" cake pan
In a blender or food processor combine the oranges with their skins *check for seeds & remove the hard stem end first, blend just to get them chunky
Add all the remaining ingredients to the oranges in the blender (the yogurt, sugar, oil, flour, baking powder & egg replacer) & blend smooth there will be very small chunks of orange that is OK
Transfer this batter to a large mixing bowl & add the crushed phyllo pastry - mix well by hand with a large spatula
Pour the batter into the prepared pan & bake for approximately 30-35 minutes or when it is fully risen & light golden on the edges
Remove from the oven & cool for about 5 minutes then spoon the orange syrup evenly over the cake. Cool completely before cutting
Serve with optional whipped cream