Below is my grandmother recipe. Simple and yummy.

Custard

1 quart milk
1 cup sugar
5 eggs, broken & beaten
1 tsp. vanilla extract

Heat milk till almost boiling. Mix eggs & sugar together. Add milk slowly to egg mixture, stirring with a fork as you add it. Add vanilla, mix. Ladle into oven proof cups. Place cups in baking pan 2-3 inches deep. Add a little boiling water to baking pan. Bake at 350 till knife comes out clean when inserted in center of custard, about 30-35 minutes. Cool completely before refrigerating

You may want to give the recipe linked below a try for a microwave method. There is a lot of good information and instructions included in the article along with the recipe.

Otherwise, for even more convenience to go along with a microwave method, locate a box of Bird's Custard Powder (a British product) and follow the instructions on the package for the microwave. I purchased a container of Bird's Custard Powder (World Market in St. Louis, MO) specifically for a recipe that called for it as an ingredient, and made the custard both stove-top (or on the hob as it states on the package) and in the microwave to use the remainder of the package.

-Grainlady

Here is a link that might be useful: Foolproof Way to Prepare Custards - LA Times

Thank you!