1. Prepare the bread: Use a sharp knife to cut your brioche bread into 1 inch cubes and place them  into a buttered 8x8 baking dish
2. Make the custard: In a medium size mixing bowl, whisk together the milk, eggs, maple syrup, vanilla extract, and almond extract until well combined. Pour the custard evenly over the brioche cubes in the baking dish
3. Let it rest: Cover the dish tightly with plastic wrap and let it sit for at least 30 minutes at room temperature or overnight in the fridge.

BAKING THE DAY OF:

1. Preheat your oven: While the casserole is resting, preheat your oven to 350 degrees F
2. Make the streusel: In a small mixing bowl, combine flour, brown sugar, cinnamon, salt, nutmeg, and melted butter until you get a texture resembling wet sand. Remove the plastic wrap and distribute the streusel evenly over the top of the rested brioche casserole
3. Bake and serve: Pop the entire dish into the oven and bake for 45-55 minutes. Once cooked, it should have puffed up and the middle should be just barely jiggly. Let it rest for at least 15 minutes before cutting and serving

PREPARE THE NIGHT BEFORE: 

1. Preheat: In the morning, pull the casserole out of the fridge and preheat your oven to 350 degrees F
2. Make the streusel:  Make the streusel by combining the flour, brown sugar, cinnamon, salt, nutmeg, and melted butter in a small bowl until it resembles wet sand. Remove the plastic wrap from the baking dish and distribute the streusel evenly over the top of the french toast
3. Bake and serve: Pop the baking dish into the preheated oven and bake for 45-55 minutes. The top should be golden brown, puffed up, and the middle should be mostly set with just the slightest jiggle. Let it sit for at least 15 minutes before cutting into pieces and serving.