1. Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish lightly with butter or non-stick spray.
2. Slice the croissants into large chunks and place them evenly in the baking dish. Sprinkle the chocolate chips over the croissants.
3. In a mixing bowl, whisk together the eggs, milk, cream, sugar, vanilla extract, cinnamon, and salt until well combined.
4. Pour the custard mixture evenly over the croissants and chocolate chips, pressing down gently to ensure the croissants soak up the liquid.
5. Let the mixture sit for about 15 minutes to allow the croissants to absorb the custard. This is a great time to tidy up or enjoy a warm cup of coffee as you wait!
6. Bake in the preheated oven for 35-40 minutes, or until the custard is set and the top is golden brown.
7. Allow to cool slightly before serving. This gives the bake a chance to firm up, making it easier to slice and serve.

As with any recipe, feel free to make it your own. Add a handful of nuts for crunch or use dark chocolate if you prefer a richer flavor. The beauty of cooking is in its flexibility, something my grandma always reminded me of when I was a little girl in her kitchen.