Step 1: Prepare the Ingredients

• Preheat the oven: Preheat your oven to 350°F (175°C).
• Grease the baking dish: Lightly grease a 9×13-inch baking dish or similar-sized casserole dish with butter.

Step 2: Mix the Custard

• Whisk the eggs and sugar: In a large mixing bowl, whisk together the eggs and granulated sugar until well combined.
• Add vanilla and salt: Stir in the vanilla extract and salt.
• Heat the milk: In a saucepan, heat the milk over medium heat until warm but not boiling. Gradually whisk the warm milk into the egg mixture to temper the eggs.

Step 3: Add the Cereal

• Combine with Grape-Nuts: Stir the Grape-Nuts cereal into the custard mixture and let it sit for 5–10 minutes to soften slightly.

Step 4: Bake the Pudding

• Pour into the dish: Pour the custard mixture into the prepared baking dish.
• Create a water bath: Place the dish in a larger baking pan and pour hot water into the outer pan, creating a water bath that reaches halfway up the sides of the pudding dish.
• Bake: Bake in the preheated oven for 45–50 minutes, or until the custard is set and the top is lightly golden.

Step 5: Serve

• Cool slightly: Allow the pudding to cool for 10–15 minutes before serving.
• Add toppings: Serve warm or chilled with whipped cream, a sprinkle of cinnamon, or fresh fruit, if desired.