In a large mixer bowl, combine water, buttermilk, sugar, melted butter & yeast, stir & then allow to sit approx 15 minutes for yeast to proof. (you know it's ready when it's puffed & frothy)
Add in eggs, honey, molasses, cocoa powder, brown sugar, salt & flours & mix together slowly using a dough hook until flour is incorporated.
Mix/knead 10 minutes.
Once mixed, let rest 10 minutes.
Preheat oven to 375 degrees & spray 9x13 glass dish with cooking spray.
Knead dough out on a lightly floured surface.
Cut into 12 large rolls.
Place in therepared baking pan, brush with melted butter & sprinkle with oats.
Bake 15-20 minutes.
Remove & brush with more melted butter & sprinkle with sea salt.
Serve while they are still warm.