Aaron's Favorite Chocolate Chess Pie

Ingredients:
1 small can evaporated milk
1 1/2 cups sugar
3 Tablespoons cocoa
1/2 stick butter (or margarine), melted
2 eggs
1 teaspoon vanilla
unbaked pie shell

Directions:
1. Preheat oven to 350 degrees.
2. Mix all ingredients and pour into unbaked pie shell.
3. Bake for 30-45 minutes.
4. Cool before serving.