Epicurious.com is one place to find an easy egg custard recipe. This recipe requires 2 cups of whole milk, 2 eggs, 2 egg yolks, 1/3 cup of sugar, 1 teaspoon of vanilla extract, and freshly grated or ground nutmeg.
To make an easy egg custard, first preheat the oven to 300 degrees Fahrenheit and place 6 separate 4-ounce oven-safe cups in a baking pan. Bring the milk to a simmer on medium-low heat in a medium saucepan. Whisk the whole eggs with the egg yolks, sugar and vanilla extract, then pour the mixture slowly into the milk while gently whisking to combine. Pour the mixture into the cups through a fine strainer and season with a sprinkle of nutmeg. Then pour warm water into the pan until the cups are half-filled, and bake for approximately 30 to 35 minutes or until the custard sets. Cool in a water bath before serving.