Step 1

Place the butter in the bowl of an electric mixer fitted with a paddle attachment and mix until creamy. Add the Parmesan, flour, salt, thyme and pepper and combine.

Step 2

Dump the dough on a lightly floured board and roll into a 13-inch long log. Wrap the log in plastic wrap and place in the freezer for 30 minutes to harden.

Step 3

Meanwhile, preheat the oven to 350 degrees F.

Step 4

Cut the log crosswise into 1/4 to 1/2-inch thick slices. Place the slices on a sheet pan and bake for 22 minutes.