Add the apples to a pot with the water and butter. Cook over medium-high heat until it comes to a boil. Reduce to a simmer and stir in the brown sugar and cinnamon and continue to cook until the apples are tender. In a small bowl, mix together the cold water and cornstarch. Add to the apples and bring to a boil. Stir until thickened.

In a bowl, whisk together the starter, yeast and sugar. Let set a couple minutes. Whisk in the salt, baking powder and oil.

Stir in the flour until it is a soft dough, but not sticky to the touch. You may need to adjust the flour amount.

Generously flour the surface and knead the dough just slightly to remove any stickiness. Roll out to about ¼-inch thick rectangle. Pour ½ stick of the melted butter and spread on top. Sprinkle with sugar, brown sugar and cinnamon.

Starting at the long side, tightly roll up the dough. Cut into about 1-inch thick pieces.

Pour the remaining ½ stick of butter in the bottom of a 12-inch Dutch oven or 11x13-inch casserole dish. Evenly place the rolls on the bottom.

Pour the apple mixture over top. Cook with coals or in the oven at about 350 degrees for about 30 minutes in the middle rack or until golden brown.