Breads with frosting

for the bread dough : 59 ml water 237 ml whole milk 113.5 g unsalted butter 1¼ large eggs , room temperature, well beaten 1 tsp pure vanilla extract ½ tsp[...]

1 lb Zucchini - (3 medium) 2 c. Unbleached all-purpose flour 1 c. Unsweetened cocoa pwdr     (not Dutch process cocoa) 1 1/2 tsp Baking soda 3/4 tsp Salt 1 c.[...]