Combine starter, eggs, sour cream, melted butter, sugar, vanilla, and salt in an electric mixer using paddle attachment
Switch to dough hook and add flour, one cup at a time until dough is no longer sticking to the sides of the bowl
Remove dough to a floured surface and knead, adding flour as needed to form a soft, pliable dough. You may only need 9 cups depending on your home environment.
Section dough into 8 balls and wrap in plastic wrap. For long fermentation, place dough in refrigerator 8 hours or overnight. For immediate use, cover dough with a towel until ready to use.
To make the Filling:
Combine all ingredients in a large bowl
Stir until well incorporated
Assemble the Nut Roll
Line four baking sheets with parchment paper
Roll out one of the dough balls to form a thin rectangle.
Spread 1/8 of the nut mixture onto the dough leaving a 1/4 inch dough rim around the edges
Starting on the long side, roll dough to form a log shape
Place 2 logs onto each baking sheet
Cover the pans with towels and allow to rise in a draft-free location for 3 hours or until puffy
Bake, one pan at a time, in a 350 degree oven for 25-35 minutes until the roll is lightly brown
Allow rolls to cool completely
Notes
*Calories are approximateNut rolls can be frozen by wrapping each roll in plastic wrap, followed by wrapping in foil. Allow to thaw before serving.Recipe can be cut in half to make 4 rolls.