Spray 9X12 glass baking dish with Pam. Tear 3 of the croissants into bit-size pieces and place evenly in bottom of baking dish. Scatter blueberries over the croissant pieces. Cut cream cheese into small pieces and distribute evenly over the berries. Tear the remaining croissants over the cheese and berries, as a top layer.
In large bowl, mix the eggs, sugar, maple syrup and blend well. Add the half and half and whisk until throughly combined. Pour the mixture over the assembled casserole and dust lightly with cinnamon. Bake in a pre-heated oven at 350 for 30 minutes, or until golden and set. After baking cut into sixths, dust with powered sugar. Serve
The assembly can be done the night before and refigerate. Allow to sit out before baking 30 minutes. May still need to add time to complete cooking. Test by inserting a knife in the center; it is done when it comes out clean.
1 cup water
1 cup sugar
1 cup blueberries
2 tablespoons cornstarch
Combine all ingredients. Microwave 3 minutes. Stir every minute. Serve on the side in a pitcher to pour over Blueberry Wrinkle