Begin by activating the active dry yeast in a small bowl, combining it with warm milk and a sprinkle of sugar. Allow this mixture to rest for about 5-10 minutes until it becomes frothy. Meanwhile, in a large mixing bowl, whisk together the all-purpose flour and salt. Once the yeast is ready, mix it into the flour along with eggs and vanilla extract until a dough starts to form.

Transfer the dough onto a lightly floured surface. Knead it for 8-10 minutes until it becomes smooth and elastic, ensuring it bounces back when gently pressed. Place the kneaded dough into a greased bowl, cover it with a clean kitchen towel, and let it rise in a warm area for 1-2 hours, or until it has doubled in size.

Once the dough has risen, punch it down gently to release excess air. Roll the dough into a rectangular shape and brush the surface generously with melted butter. Sprinkle with a mixture of cinnamon and sugar, then roll the dough tightly from one end to the other. Cut the rolled dough into 12 equal pieces, placing each piece seam-side down in a greased baking dish. Allow them to rise again for 30-45 minutes until they are puffy.

Preheat your oven to 350°F (175°C) while the shaped rolls are rising. Once they have puffed up nicely, bake the rolls for 20-25 minutes until they are golden brown and firm to the touch. As soon as they come out of the oven, brush the warm rolls lightly with more melted butter for added richness. Let them cool slightly before serving, and enjoy your Delicious Vanilla Pan de Mallorca Rolls!