mix 2 cups of flour with the dry ingredients for the rolls together in the bowl of a stand mixer and set aside
warm the water and melt the butter together in a saucepan just until the butter melts
let the water butter mix cool to JUST warm
set up your stand mixer with a dough hook
then stir the water and butter together with the eggs
stir it into the flour mix with the dough hook on low speed
add one cup of flour and blend on low again
add the fourth cup of flour and stir until incorporated
knead the dough in the machine on low adding as much of the remaining flour as needed to form a soft pliable but not sticky dough
knead for 3-4 minutes until the dough is finished, check it by stretching a small piece of dough thin enough to see through, if you can't stretch it that thin knead it again for 1-2 minutes and try it again
cover the dough and let it rest 10 minutes
make the filling while the dough rests
melt the butter together with the molasses in a small saucepan
then add the brown sugar, cinnamon, ginger, and nutmeg and stir together
remove from the heat and let it cool
roll the dough out into a 10x15 inch rectangle
if it's too stretchy and won't roll out let it rest a little longer
when it's rolled flat spread the filling over the dough leaving a one-inch strip of dough on one of the long sides without filling
roll the dough beginning on the long end of the dough with filling, pinch the area without filling to seal the seam on the long roll of dough
use a sharp knife to slice 12 rolls, you can also use cotton string, thread, or unflavored dental floss to slice rolls
lightly butter a 9x13 inch pan and place the rolls in the pan
cover tightly and let them rise for 45-60 minutes until the rolls are doubled in size
preheat the oven to 350˚ about 30 minutes into the rising period
bake the rolls for 25-30 minutes, turn the pan halfway through baking to evenly bake if needed
cool on a baking rack for 20 minutes before frosting
make the frosting
mix all the frosting ingredients together and beat with a hand mixer or stand mixer until well combined
frost the gingerbread rolls with the frosting while they're still warm but not piping hot