Preheat oven to 350 degrees. Spray a 9 x 9 or 8 x 11 baking dish with cooking spray.
Add croissant pieces to baking dish. Sprinkle berries evenly over croissants.
Beat cream cheese for 30 seconds with electric mixer.
Gradually add in sugar
Gradually add in eggs
Gradually add in vanilla
Gradually add in milk.
Continue to mix until well blended.
Pour cream cheese mixture over croissants and berries.
Let rest for at least 20 minutes or refrigerate over night.
Bake for 35-40 minutes or until golden brown and set in center.
Serve warm with powdered sugar sprinkled on top.
