I made this as a tasty treat for the lunchboxes. It was a hands down success. I hope your family enjoys it as much as mine did.
Stir flour mixture into the egg mixture until just combined. Transfer about 1/3 of the batter (a generous cup. to separate bowl. Stir the melted chocolate into the smaller amount of batter, mixing well.
Bake in the center of the over until toothpick inserted into the center of the loaf comes out clean. About 65 minutes.