Creating the Blueberry Croissant Bake is simple if you follow these steps:

1. Preheat the Oven: Set your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
2. Prepare Croissants: Cut each croissant in half horizontally and layer them in the baking dish, cut side up.
3. Add Blueberries: Sprinkle the fresh blueberries evenly over the croissant halves.
4. Mix Egg Mixture: In a large bowl, whisk together the eggs, milk, heavy cream, sugar, vanilla extract, cinnamon, and salt until well combined.
5. Pour Mixture: Pour the egg mixture over the croissants and blueberries, ensuring they are thoroughly soaked.
6. Press Down: Gently press the croissants down to ensure they soak up the custard mixture.
7. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the top is golden brown and a knife inserted comes out clean.
8. Cool: Remove 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 an extra touch of sweetness.
10. Garnish: Optionally, garnish with fresh mint leaves for a pop of color.

Following these steps will guide you in creating this delectable Blueberry Croissant Bake effortlessly.