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

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter.
2. Prepare Croissants: Cut the croissants into bite-sized pieces and place them in the greased baking dish.
3. Make Custard Mixture: In a large bowl, whisk together the eggs, milk, heavy cream, sugar, vanilla extract, cinnamon, and salt until well combined.
4. Combine: Pour the custard mixture evenly over the croissant pieces, ensuring all pieces are soaked. If using, sprinkle raisins or chocolate chips on top.
5. Press Down: Gently press the croissants into the custard mixture to ensure they absorb the liquid.
6. Bake: Place the baking dish in the preheated oven and bake for 35-45 minutes, or until the top is golden brown and a knife inserted in the center comes out clean.
7. Cool: Remove from the oven and allow it to cool for about 15 minutes before serving.
8. Dust: For an elegant touch, dust with powdered sugar before serving.

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