In the bowl of an electric mixer, place 2 cups of Einkorn flour and the salt. Add yeast to flour mix.
Melt butter in pan, add milk. Leave over heat and sir until milk and butter are well combined.
Remove from heat and add sugar and water. Stir until well combined.
Slowly pour liquids over the flour in mixer. Mix on low with the whisk attachment.
Add eggs. Mix briefly.
Add remaining flour and mix until well combined, switch to dough hook and mix on low for 5 minutes.
Transfer dough to greased bowl, cover with cling wrap. Allow to rise for 1.5 hours.
Remove dough from bowl, place on floured surface, punch down, and roll into a ball.
Divide dough equally into 12 balls, place on a greased and floured surface.
Cover with a kitchen towel and allow to rise an additional 1.5 hours.
Preheat oven to 350°.
Once second rise is complete, remove towel and brush with melted butter. Sprinkle with sesame seeds, if desired.
Bake for 15-20 minutes, until golden brown.
Allow to cool for about 30-60 minutes before slicing (or they will crumble).
If you find the that buns fall apart while being eaten, butter and toast the cut sides of the bun before serving.Freeze for up to 1 year.To Thaw: Remove from freezer and allow to thaw, in an open bag, on the counter. Or, if you're in a hurry, place rolls in a cold oven and set the temperature to 350°. Once the pre-heat is finished, remove the rolls and they should be ready to use.