A bare-bones recipe, but I don’t dispute the description.
From the box of L.R. from Winston-Salem, North Carolina.
Quick and Easy Pie Chocolate
1 stick butter
1 ounce unsweetened chocolate
1 cup sugar
2 eggs, beaten
1 teaspoon vanilla
Melt butter and chocolate in saucepan. Add sugar, eggs, and vanilla. Mix well. Pour into uncooked pie shell. Bake 30 minutes at 350 degrees. Cool and top with whipped cream.