Microwave Chocolate Pudding

This is my family's absolute favorite lunch-time dessert... silky smooth and not too sweet.

1/4 cup sugar
1/4 cup unsweetened cocoa
1/4 cup cornstarch
3 cups milk 
1 tsp. vanilla extract

Whisk together sugar, cocoa, and cornstarch in a large microwaveable (Pyrex) mixing bowl.
Whisk in milk until smooth.
Microwave on high 3 minutes.
Stir well with a whisk.
Microwave on high 3 minutes (again).
Stir well with a whisk.
Microwave at 70% power for 1-1/2 minutes or until thickened.
(Do not overcook! If this explodes in the microwave it isn't pretty. I know.)
Stir in vanilla extract.
Spoon into serving dishes and serve warm or cover and chill thoroughly.

Serves 4