Warm the milk until slightly warm to the touch, not hot.
Pour the milk into the bowl of a stand mixer and sprinkle the yeast on top. Let sit for 5 minutes until foamy.
Add the flour, honey, sugar, melted butter, and salt.
Using the dough hook, mix on medium speed for 5–6 minutes until a soft, smooth dough forms and pulls away from the sides of the bowl. If the dough is too sticky, add 1 tablespoon of flour at a time until manageable.
Transfer the dough to a lightly floured surface and divide into 12 equal pieces.
Roll each piece into a smooth ball.
Line the slow cooker with parchment paper.
Place the dough balls inside, leaving a little space between each one. Cover with the lid.
Cook on HIGH for 90 minutes, or until the bottoms are lightly golden and the tops are set. Avoid opening the lid too early.
Carefully remove the rolls from the slow cooker and brush with melted butter.
Sprinkle with coarse salt if desired.
Optional, broil for 1–2 minutes to brown the tops.
Serve warm and enjoy.