Add milk, water, brown sugar, salt, and butter to a medium sauce pan. Cook on medium high until the milk is scalded (just before boiling), and the butter and sugar are melted. Set aside to cool below 110*F
Mill Flour while that mixture is cooling
After the milk mixture had cooled a bit, pour it into your stand mixer.
Next, pour in the fresh milled flour, and begin to mix on low until it is mostly combined.
Then, add your eggs and vanilla. Mix to incorporate (It will seem separated at first, keep mixing until it is all one cohesive dough)
Once all incorporated, let the dough rest for about 15 minutes so the fresh milled flour can start to absorb the liquids.
Make your filling while waiting. Heat up butter, and add dates, brown sugar, salt, cinnamon, cardamom, and date sugar. Mix until it comes together. (This will seem like a sticky paste.)
Now, After the dough has rested, add the instant yeast. Mix until the yeast is incorporated.
So, now it is ready to start the kneading process. Knead on level 2 until is passes the window pane test. You can see this pass/fail test in my short video HERE. (This could take up to 20-25 minutes with fresh milled flour, don't rush the process for best results)
After the dough passes the window pane test, cover and let rise for 1 to 2 hours, or until doubled in size.
Once dough has risen, take it to a lightly oiled surface. Press or roll your dough out flat to a 15 x 17 inch rectangle.
Evenly distribute the filling (I had to just break it up with my hands) all over the top, and from the short side, roll the dough into a log.
Divide dough into 12 even pieces.
Place on a lined 9x13 baking pan. Cover these, and let them rise for about 40 minutes. (or overnight in the fridge.)
Bake at 350* F for 18-20 minutes. (If using the refrigerator method, set the cinnamon rolls on the counter the next day for 1-2 hours to come to room temperature. Then bake.
*Optional- Make icing by melting butter, adding powdered sugar, vanilla, and milk as needed. Pour on when cinnamon rolls are still warm for a glaze icing.