For the cream puffs: Preheat the oven to 400 degrees F. Line a baking sheet with parchment paper.
Whisk the flour and salt in a small bowl.
Put the butter and water in a medium saucepan over medium heat. When the water begins to boil and the butter is melted, add the flour mixture all at once and stir constantly with a wooden spoon until the mixture forms a ball and pulls away from the sides of the pot, about 3 minutes. Remove the saucepan from the heat and cool the dough until it is no longer steaming, at least 5 minutes.
Using a wooden spoon, beat the eggs into the dough, one at a time. Once all the eggs are incorporated, put the dough in a piping bag. Cut the tip of the piping bag about 1/2-inch from the point. Pipe 16 equal-size mounds of dough onto the prepared baking sheet, leaving about 1 inch between each mound.
Bake for 10 minutes. Lower the heat to 350 degrees F and bake for another 30 minutes. Cool on a wire rack. Cut the cooled cream puffs in half horizontally.
For the Chantilly cream: Put the cream in the bowl of a stand mixer fitted with the whisk attachment. Begin whisking on medium speed. Slowly add the 1/4 cup confectioners' sugar, then whisk until stiff peaks form. Turn the mixer to low speed and slowly add the RumChata until combined.
To assemble: Put the Chantilly cream in a pastry bag and cut the tip about 1 inch from the point. Pipe some Chantilly cream into bottom halves of the cream puffs and top with the top halves. Dust with confectioners' sugar and serve.
This recipe was created by a contestant during a cooking competition. It has not been tested for home use.