Pre-heat oven 350℉Prepare sheet pan - use silpat or cooking spray your sheet pan in a medium bowl add the flour, oil and cold water. Using a fork mix everything until all is combined.
On a lightly floured working surface, pour out the dough and using a rolling pin, roll out the dough, your looking for a rectangle shape about a ¼ inch thick.
slicing the butter into small pieces, place all around the dough. Sprinkle with the sugar and then the cinnamon. Adjust your filling as needed. If it needs more of one or all three, now is the time to adjust to your liking.
Start rolling from the long side and roll until you get a tube. Take a sharp knife and slice pieces about and inch and a half in size. While they do not have to be precise it is nice if they are all uniform in size. So they cook around the same time.
Bake for 40-50 minutes, until the dough is cooked through.
NOTE: it is best to clean up your sheet pan while it is still a little warm, otherwise you will have to work at it. the sugar and butter become super hard.
I doubled the batch which makes what you see in the pictures about 18