Combine the warm water, sugar and yeast together in the bowl of a stand mixer. Let stand for 3 minutes or until it starts to bubble.
Add the milk, mashed potatoes, 6 tablespoons melted butter, sugar, salt and the egg. Stir to combine.
Add 4 cups of flour and using the kneading paddle, set on medium to mix. Add more flour until it forms a nice ball. Knead for 7 minutes or up to 15 minutes by hand. Check the dough. It should be stretchy when pulled apart. It shouldn’t just break apart.
Form a ball with the dough and cover with a cloth. Place in a warm place (oven) and allow to rise until doubled for about an hour.
Push the dough down and divide into 24 even size pieces. Roll into balls.
Spray a large pan with cooking spray and place the dough balls evenly in the pan.
Let the rolls rise until doubled.
Heat the oven to 350°. Bake the rolls for 12 to 15 minutes, or until lightly browned.
Brush the tops of the rolls with the remaining 2 tablespoons of melted butter.
Notes
Recipe Tips
Proof - To proof the yeast, you need to add it to the warm water and sugar and allow it to bubble for 3 to 5 minutes. If the yeast doesn’t begin to bubble, you will need to dump it out and start over with fresh yeast.
Rise - Turn your oven to 200°, and once it is warm, turn it off. Place your prepared dough in the warm oven to let it rise quickly. Do NOT forget to turn off the oven.
Potatoes - You can make fresh mashed, unseasoned potatoes or use leftover mashed potatoes that are seasoned.
Potato Water - If you are making the mashed potatoes at the time you are preparing the rolls, save the potato water to use instead of the warm water.
Stand Mixer - These are easiest made in a large stand mixer or a bread machine. They can even rise the first time in the bread machine, then remove and shape into rolls and place on your pan.
Storage
Refrigerator - Store in an airtight container in the refrigerator for up to 5 days.
Make Ahead - Prebaked rolls may be frozen, then thawed, and allowed to rise before baking.
Freezer - Baked rolls can be stored in an airtight container and frozen for up to 3 months.