To a large mixing bowl, add the water, yeast, and 1 1/2 cups of the flour. Stir to evenly combine. Cover the bowl with plastic wrap, or a damp dish towel, and set in a warm place to rise, about 20-30 minutes, or until the starter's doubled in size and the surface has bubbled.
1 cup warm water, 1 .25 oz pkt instant yeast, 4 cups flour
In the bowl of a stand mixer, use the paddle attachment to cream together the butter, sugar, salt, and mustard until evenly combined, light & fluffy. Mix in the eggs and potato, again until evenly combined.
1 medium russet potato, 1/2 cup butter, 1/4 cup sugar, 1 1/2 tsp salt, 1 tsp dried mustard, 2 large eggs
Switch to the dough hook attachment (you can still use the paddle if that's what you have). Mix in the yeast mixture and 1 1/2 cups of cheddar until evenly combined.
2 cups shredded cheddar cheese
Mixing at low speed, slowly and in small amounts, mix in the remaining flour until the dough's pulling away from the sides and finally forms a soft, sticky ball.
Lightly oil a large mixing bowl. Using floured hands, pick up the dough ball and shape it a little before transferring it to the prepared bowl. Turn the dough in the bowl to lightly coat it in the oil. Cover the bowl with plastic wrap and let the dough rise until doubled in size, about 1 1/2-2 hours.
olive oil
Lightly flour a clean, flat work space or counter top. Turn the dough out onto the prepared surface and divide it into 24 dough balls, shaping and dusting with flour as needed to not stick to hands. Spray a 9x13 baking dish lightly with cooking spray and arrange all the dough balls in it so they're all in it and touching slightly.
Pull off a piece of aluminum foil that's slightly longer than the baking dish. Spray it lightly with non stick spray. Cover the dish tightly with the foil, oiled side down on top of the rolls. Bake the rolls at 350 degrees for 30 minutes, or just until firm to the touch.
Uncover the rolls and brush the tops generously with the melted butter. Sprinkle the remaining cheddar evenly out over the top. Return the rolls to the oven, uncovered, and continue baking an additional 20 minutes- or until the rolls are golden brown on top with crisp melted cheese.
2 tbsp melted butter
Let the rolls rest 15-20 minutes before pulling apart and serving.