Chocolate-topped conchas are a beloved variation of Mexico's iconic sweet bread. This family-favorite pan dulce is a soft, sweet, cocoa-flavored breakfast pastry.
Warm the milk to about 110°F and stir in the active dry yeast with 1 tablespoon of sugar. Let sit for 8-10 minutes, until foamy.
In a large bowl, combine the flour, remaining granulated sugar, and salt. Make a well in the center and pour in the yeast mixture, eggs, vanilla extract, and softened butter.
Mix ingredients together, then knead for 8-10 minutes until dough is smooth and elastic. Cover and let rise in a warm place for 1-2 hours, or until doubled in size.
Prepare the chocolate topping: Cream together unsalted butter (for topping), powdered sugar, and cocoa powder until smooth. Set aside.
Divide dough into 8 balls and place them on a baking sheet. Flatten slightly. Divide the topping into 8 portions, flatten into disks, and gently press a disk onto each dough ball. Score the classic concha shell pattern with a knife.
Cover loosely and let rise for another 45-60 minutes until puffy. Meanwhile, preheat oven to 350°F.
Bake conchas for 18-20 minutes until just golden at the edges. Cool slightly before serving warm.