Follow these easy steps to create your Cinnamon Croissant Bread Pudding:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or non-stick spray.
2. Prepare Croissants: Tear the croissants into bite-sized pieces and place them in the greased baking dish.
3. Mix Wet Ingredients: In a large mixing bowl, whisk together the milk, heavy cream, eggs, granulated sugar, vanilla extract, ground cinnamon, and salt until well combined.
4. Combine: Pour the custard mixture evenly over the croissant pieces, ensuring all pieces are soaked. Gently press down on the croissants to help them absorb the liquid.
5. Add Optional Ingredients: If desired, sprinkle raisins or chocolate chips over the top for added flavor and texture.
6. Bake: Place the baking dish in the preheated oven and bake for 45-50 minutes, or until the top is golden and a toothpick inserted into the center comes out clean.
7. Cool: Once baked, remove from the oven and let it cool for about 15 minutes. This allows the pudding to set slightly.
8. Serve: Dust with powdered sugar before serving if desired.

These steps will guide you in creating this incredible Cinnamon Croissant Bread Pudding effortlessly.