Pan Dulces

Step 1
Heat milk in a small saucepan until it bubbles, then remove from heat. Add butter, stir until melted, and pour into a large bowl to cool.

Step 2
Dissolve yeast in the milk mixture. Mix in 1/3 cup sugar and salt. Add in eggs and 2 cups flour. Stir in remaining flour, 1/2 cup at a time, beating well after each addition. When the dough has pulled together, turn it out onto a lightly floured surface and knead until smooth and supple, about 8 minutes. Lightly oil a large bowl, place the dough in the bowl and turn to coat with oil. Cover with a damp cloth and let rise in a warm place until doubled in volume, about 1 hour.

Step 3
Divide the dough into 16 equal pieces and form into rounds. With a rolling pin, roll the rounds into oval buns. Place them onto two lightly greased baking sheets. Cover the rolls with a damp cloth and let rise until doubled in volume, about 40 minutes.

Step 4
Meanwhile, preheat the oven to 350 degrees F (175 degrees C).

Step 5
While the bread rises, make the topping: In a small bowl, stir together 1/2 cup sugar, 2/3 cup flour, and butter until a crumb mixture forms. Stir in egg yolks until well blended. Crumble the topping over the rolls so the entire surface is covered.

Step 6
Bake in preheated oven for 15 to 20 minutes, or until sugar topping is lightly browned.