Preheat your oven to 350°F (175°C).

In a large mixing bowl, combine 4 cups of cubed white bread and ¼ cup of raisins.

Warm 2 cups of milk and ¼ cup of butter in a small saucepan over medium heat.

Pour the warm milk and butter mixture over the bread and raisins; let it sit for 10 minutes.

Add ¼ cup of sugar, 2 slightly beaten eggs, 1 tablespoon of vanilla extract, and ¼ teaspoon of ground nutmeg to the soaked mixture.

Grease a casserole dish with butter and pour the pudding mixture into it, smoothing the top.

Bake for 40-50 minutes, until the top is golden brown and the center is firm.

Prepare the vanilla sauce by combining ½ cup of butter, ½ cup of sugar, and ½ cup of packed brown sugar in a small saucepan over medium heat.

Once the sauce is boiling, stir in ½ cup of heavy whipping cream.

Finish the sauce with 1 tablespoon of vanilla extract before serving.