Ingredients:

1/2 c. butter
1 c. boiling water
1 c. all-purpose flour

1/4 tsp. salt
4 eggs

Directions:

In a medium saucepan melt butter in the boiling water. Ad flour & salt all at once. Stir vigorously until the flour is well blended. Cook & stir flour mixture over medium heat until it forms a smooth ball. Remove from heat and cool for 5 minutes. Add the eggs, one at a time, beating until smooth after each addition. Batter should appear smooth, thick, velvety & slightly sticky to the touch.  
Drop batter by heaping tbsps. onto a greased baking sheet, using about 1/4 cup batter for each.  Space puffs about 3 inches apart.  Use spatula to push sticky batter from spoon.  
Bake at 400ºF for 30-35 minutes or until golden brown and puffy.  
Remove from oven. With serrated knife, split puffs in half horizontally, removing any soft dough inside.  
Cool thoroughly on wire rack. Fill with vanilla pudding & top with chocolate glaze, see below.
Pudding:  In med. pan, combine &, stirring constantly, bring to boil: 1 4.6-oz. pkg. Jell-O Cook & Serve Vanilla Pudding, 3 c. milk & 2 beaten eggs. Remove from heat & add 1 tsp. vanilla extract.  
Chocolate Glaze:     Melt 2 squares unsweetened chocolate & 2 tbsp. butter in top of double boiler. Stir in 1 c. confectioners' sugar alternately with 4 tbsp. milk. Beat until smooth and shiny.  
Spoon over top of puffs.