Step 1

In medium sized saucepan, blend together sugar, cocoa, flour, and salt. Add egg and mix until well blended. Slowly stir in milk until ingredients are blended.

Step 2

Over medium heat, stirring constantly, bring to a boil. Cook, stirring constantly, until mixture thickens slightly, 3 to 5 minutes. Pudding will thicken more as it cools.

Step 3

Stir in butter and vanilla. If desired, divide into 4 serving dishes. Serve warm or cold.

Step 4

To avoid having a skin form on top of the pudding, press plastic wrap directly on the surface of the pudding as it cools.