In a large bowl, whisk together eggs, milk, vanilla, and cinnamon until well combined. Heat a buttered grill or skillet on medium-high heat, and dip both sides of the bread in the egg mixture until it begins to soak into the bread. Place the bread on the grill or skillet and grill, and cook until golden brown. Make sure to flip bread so that it cooks evenly on both sides.
To make the berry cream cheese filling, combine the cream cheese and sugar until creamy. Next, fold in the warmed Oregon raspberries and blackberries.
When the French Toast is done, spread a layer of the cream cheese mixture on one side of the French toast and add another slice of French toast on top to make a sandwich. Sprinkle with a little powdered sugar, if desired, and serve with warm maple syrup.
Enjoy!