Preheat oven to 450F. Rip up croissants into bite sized chunks and bake for 8-10 minutes or until golden and crispy. Let cool
In a large bowl using a hand mixer or stand mixer, mix together cream cheese, sugar, cinnamon, nutmeg, and salt. Add in eggs and vanilla and beat until smooth. Beat in milk and blend until creamy.
Add cooled croissant pieces to 9x13 dish. Sprinkle on berries. Pour egg mixture over top of croissants as evenly as possible. Press croissants gently into egg mixture and cover with aluminum foil.
Let sit overnight or at least 2 hours before baking.
Bake for 50-55 minutes at 350F or until egg mixture has set and croissants are golden. Let cool at least 20 minutes before serving.
Serve with powdered sugar, more berries, and maple syrup.