In a large pot, melt the butter in the water over medium heat. Add the flour and stir until the mixture forms a ball. Remove from the heat and let cool.
In a medium bowl, beat the eggs, vanilla extract, and sugar until light and fluffy. Add the egg mixture to the flour mixture, stirring until thoroughly combined.
Line a baking sheet with parchment paper. Drop the dough by the tablespoonful onto the parchment paper. Bake for 25 minutes, or until golden brown. Let cool completely.
In a medium bowl, combine the chocolate chips and cream. Microwave for 30 seconds, then stir until smooth. Add the chopped pecans to the chocolate mixture and stir until combined.
Cut the cooled cream puffs in half. Place a spoonful of the chocolate mixture onto the bottom half of each puff. Place the top half on top of the filling and serve.
Interesting Facts
Chocolate cream puffs are a classic French dessert.
The dough for the cream puffs is called pâte à choux.
Chocolate cream puffs can be made ahead of time and frozen for up to 3 months.