Lightly coat a 9×13 baking dish with nonstick spray. Place half of croissants evenly into the baking dish. Top with half of cream cheese and ¾ cup raspberries in an even layer. Top with remaining croissants, cream cheese and ¾ cup raspberries.
In a large glass measuring cup or another bowl, whisk together eggs, milk, honey, vanilla and salt. Pour mixture evenly over the croissants. Cover and place in the refrigerator for at least 2 hours or overnight.
Preheat oven to 350 degrees F. Remove baking dish from the refrigerator; let stand 30 minutes.
Place into oven and bake, covered, for 30 minutes. Uncover; continue to bake for an additional 30-35 minutes, or until golden brown and center is firm.
Serve immediately, sprinkled with remaining raspberries and confectioners’ sugar, if desired.
