½cupmelted butter, plus 2 tablespoons more for brushing on the bread
3 ½ to 4cupsall purpose flour
Powdered sugar, for dusting
Heat the water and milk just until warm (105°F). Pour into a large bowl and stir in the yeast and a tablespoon of sugar. Allow to sit for 5 minutes until the yeast begins to bubble.
Stir the remaining sugar and the 1/2 cup melted butter into the yeast. Add the egg yolks and vanilla and mix well.
Stir in 3 ½ cups of flour and salt until well combined. If the dough is too sticky, add a little more flour until a soft dough forms.
Cover the dough with a towel and place in a warm place. Allow to rise until doubled, about 1 hour.
Dust a large surface with flour and roll the dough out into a 14x18 inch rectangle.
Melt the remaining 2 tablespoons of butter and brush over the bread. Use a sharp knife or a pizza cutter and cut 1 inch wide strips down the length of the dough.
Line a large cookie sheet with parchment paper or a silicone baking mat. Roll each strip up and into a roll and place on the cookie sheet. Leaving about 3 inches between each roll for spreading.
Brush the tops with any leftover melted butter and cover lightly with a tea towel. Allow bread to rise in a warm place until nearly doubled, about another 45 minutes to an hour.
Heat the oven to 350°F and place the rolls in the pre-heated oven. Bake until lightly browned, between 12 and 18 minutes.
Remove and dust with powdered sugar. Serve warm or let cool completely before storing.
Storage: If the area where you live isn't humid, you can store the bread in a paper bag for up to 3 days. For longer storage, keep them in an airtight container for up to 5 days. To reheat them, microwave the Mallorcas for 10-20 seconds, until just warmed through.Freeze: Yes, but don't dust them with powdered sugar. Place the bread on a parchment lined baking sheet. Freeze it for 1-2 hours. Wrap each piece in plastic wrap twice and then in foil once. Place them in a freezer-friendly bag or container. Freeze for up to 2 months.Thaw: Set on the counter at room temperature until fully thawed. Enjoy at room temperature or reheat in the microwave to warm again. Dust them with powdered sugar right before serving.