Place the raisins into a medium bowl and cover them with warm water. Let them soak for 10 minutes. You can move on to the next step in the meantime.
Whisk the milk, yeast, and sugar together in a large mixing bowl. Set it aside for 5 to 10 minutes. The mixture should become frothy (Note 1).
Whisk the melted butter and salt into the milk mixture, then drain the raisins and add them to the mixture as well.
Begin stirring in the flour, adding it in three or four increments and stirring until all of the flour has been added and a dough has formed. You can work the last bits in with your hands if needed.
Lightly sprinkle a work surface with flour. Turn the dough onto the surface and knead it until it becomes smooth and elastic, 5 to 8 minutes.
Lightly oil the inside of a large mixing bowl. Roll the dough into a ball and place it in the bowl. Cover the bowl with a damp kitchen towel, then place it in a warm location and let it rise for 1 to 2 hours, until doubled in size (Note 2).
Once the dough has risen, stir or whisk the sugar, cinnamon, and cornstarch together in a small bowl.
Grease the inside of a 9 x 5 inch loaf pan.
Lightly sprinkle a work surface and rolling pin with flour. Punch the dough down, then turn it onto the work surface. Roll the dough into an approximately 8 x 14 inch rectangle. Brush the top of the dough with the melted butter, then sprinkle it with the cinnamon sugar.
Roll the dough into a log, starting with a short side. Place the log, seam side down, into the prepared loaf pan, gently tucking the ends under.
Cover the loaf pan with a damp kitchen towel, then place the pan in a warm location. Let it rise again for 30 to 60 minutes, until puffy but not yet doubled in size.
Preheat the oven to 350°F (Note 3).
Once the oven has fully heated, bake the bread for 35 to 40 minutes, until the top is golden brown and the internal temperature is 190°F to 200°F.
Place the pan on a cooling rack and let the loaf cool completely. Once it's cool enough to handle, you can remove the loaf from the pan and transfer it directly to the rack to accelerate cooling.
Once cool, slice and serve.