1. **Prepare the Bread:**
– Cut the bread into 1-inch cubes and place them in a greased 9×13-inch baking dish.

2. **Make the Custard:**
– In a large bowl, whisk together the eggs, milk, cream, granulated sugar, vanilla extract, cinnamon, and salt until well combined.

3. **Combine:**
– Pour the egg mixture over the bread cubes, gently pressing down to ensure all the bread is soaked. Cover and refrigerate for at least 1 hour (or overnight for best results).

4. **Preheat Oven:**
– Preheat your oven to 350°F (175°C).

5. **Make the Topping:**
– In a small bowl, mix the brown sugar, oats, cinnamon, and cubed butter. Use a fork or your fingers to combine until crumbly.

6. **Assemble:**
– After the bread has soaked, sprinkle the topping evenly over the bread mixture.

7. **Bake:**
– Bake in the preheated oven for about 45-55 minutes, or until the top is golden brown and the custard is set.

8. **Serve:**
– Let it cool for a few minutes before serving. Enjoy with fresh berries, a drizzle of maple syrup, or a dusting of powdered sugar!

### Tips
– **Make Ahead:** You can prepare the bread and custard the night before and bake it in the morning for an easy breakfast.
– **Variations:** Add chocolate chips, nuts, or other fruits to the mixture for extra flavor!

Enjoy your French Toast Bake! ✨