Chocolate Chess Pie

1/2 stick butter softened

1 1/2 cup sugar

3 1/2 tablespoon cocoa

2 beaten eggs

1 small can Pet milk

1 teaspoon vanilla

pinch salt

Pre-made unbaked pie crust (Pillsbury makes a good one if you don't want to make it from scratch)

Mix all ingredients in order and pour into pie shell bake at 350 degrees for 45 minutes