Preheat your oven to 350°F (175°C).

Grease a 9x13-inch baking dish generously with unsalted butter.

Cut your chosen bread into 1-inch cubes and spread evenly across the prepared baking dish.

In a large mixing bowl, whisk together the eggs, whole milk, granulated sugar, vanilla extract, ground cinnamon, nutmeg, and a pinch of salt until combined.

Pour the custard mixture over the bread cubes, pressing down gently to ensure absorption. Let it sit for about 10 minutes.

Drizzle melted butter or toppings of your choice over the soaked bread.

Bake uncovered for 30 to 45 minutes until golden-brown.

Let it cool for about 10 minutes before serving.