I used Martha Stewart's recipe from when she first had just a couple of cookbooks out - long long before she became a bigtime media "diva". While I don't have the books in front of me, I believe it was from the Martha Stewart's Christmas book. I made about 75 chocolate-rum-cream-filled cream puffs to make her Xmas "Croquenbouche" with, & they turned out fabulous!!
I then, of course, mounted them in a pyramid shape using homemade caramel, & covered them with gorgeous sparkling strands of homemade caramel-colored spun sugar. It was truly a glorious holiday dessert - albeit unwieldy/sticky to serve - lol!!