Add minced garlic and continue to cook 2-3 minutes more. In a mixing bowl combine sausage meat, Parmesan cheese, herbs, salt, pepper, onion, and garlic.
Roll out puff pastry sheet on a lightly floured surface or between two sheets of wax paper. Using a pizza cutter or a sharp knife, divide the puff pastry into three equal strips.
Beat the egg with a couple tablespoons of water and using a pastry brush. Divide the sausage mixture into three equal portions and form into a long strip.
Brush each long roll with egg wash and sprinkle with seeds. Place on a parchment lined sheet tray and place in freezer for about 15 minutes. Preheat oven to 400 degrees and remove from freezer.
Using a pizza cutter or sharp knife, divide each log into pieces. Place the pieces back on the lined sheet tray and bake for 20-25 minutes until sausage is fully cooked.