Creating Cinnamon Croissant Bread Pudding is easy if you follow these simple steps:

1. Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or cooking spray.
2. Prepare the croissants: Tear the croissants into bite-sized pieces and place them evenly in the greased baking dish.
3. Make the custard: In a large mixing bowl, whisk together the eggs, whole milk, heavy cream, granulated sugar, vanilla extract, ground cinnamon, and salt until well combined.
4. Combine: Pour the custard mixture over the torn croissants. Gently press the croissants down to ensure they are fully soaked.
5. Add extras: If using, sprinkle raisins or chocolate chips evenly on top of the pudding mixture for added flavor.
6. Let it rest: Allow the mixture to sit for about 15-20 minutes to let the croissants absorb the custard.
7. Bake: Place the baking dish in the preheated oven and bake for 45-50 minutes, or until the top is golden brown and a knife inserted in the center comes out clean.
8. Cool: Remove the pudding from the oven and let it cool for about 15-20 minutes before serving.
9. Dust with powdered sugar: If desired, dust the top with powdered sugar for a beautiful finish.
10. Serve: Cut into squares and serve warm, optionally with whipped cream or a scoop of ice cream.

These steps will guide you in creating this incredible dessert effortlessly.