Defrost pastry dough if frozen, overnight in refrigerator.
On a cutting board, sprinkle flour and lay out one pound of dough to rest and expand for 10-15 minutes.
Preheat oven to 350°F and line two baking sheets with parchment paper.
Roll out dough into a rectangle of approximately 9x14" and ¼-inch thick.
Cut into 12 roughly even squares.
Roll out one square into roughly twice its size.
Roll out the sausage meat in about 1 inch wide “tube” the length of the rolled out square on the left edge.
Tightly roll the dough from left to right until roll is completely closed and with seam side down; place on tray with parchment paper allowing a tiny bit of space for each roll to expand.
Repeat with remaining dough and sausage.
Once trays are full, place in oven and bake until golden brown, approximately 20-25 minutes.
Take out of oven and serve hot with sides of mustard and/or maple syrup, or eat as-is.