In a large bowl or mixer, add water, sourdough starter, honey, melted butter and mix well.
Add in the salt and whole wheat flour and mix to combine.
Add the bread flour one cup at a time until the dough isn't too sticky and can be kneaded without getting stuck to your hands.
Knead for 5-10 minutes until smooth and elastic. Place in a large bowl and cover and let raise until doubled. This may take about 4-12 hours, depending on the temperature of your home and the strength of your sourdough starter.
Once the dough has doubled, dump out onto a lightly floured surface and divide into four even parts.
At this point, you can either form loaves and place in greased bread pans and cover with plastic wrap to let rise. Or, divide each part into twelve buns and place on a greased baking sheet and let raise until doubled. If needed, place in the fridge to long ferment and slow the rising time.
Once the dough has doubled, remove covers. Preheat the oven to 350°F and bake for about 30 minutes for bread and 20-22 minutes for buns.
Let cool completely on a wire rack and store in a bag in the pantry or freeze until needed.
Enjoy!