Preheat the oven to 350°F (175°C). Grease and line a 9×5-inch loaf pan.
In a large bowl, whisk eggs until frothy, about 1 minute.
Stir in coconut flour, psyllium husk powder, baking powder, and salt until evenly combined.
Blend in melted butter until the mixture thickens slightly.
Pour in boiling water and stir vigorously for 30 seconds—you’ll notice it transform into a dense dough.
Transfer dough into the pan, smooth the top, and let rest for 2 minutes.
Bake 50 minutes until firm and golden around the edges.
Cool completely in the pan (about 1 hour) before slicing to avoid crumbling.
Notes
These times include a brief 2-minute rest to hydrate the psyllium for a silkier crumb.Always cool completely and chill briefly before slicing to achieve cleaner cuts and minimize crumbs.