Warm the sesame seeds in a sauté pan or skillet over medium heat. Stir frequently until the seeds are lightly golden and toasted, about 3 to 5 minutes. Even if you buy “toasted” sesame seeds, they still benefit from a quick toast in the pan to bring out their subtle flavor
Place the butter and the cream cheese into a large mixing bowl. Beat on medium speed until the two are blended together, light and creamy, about 2 to 3 minutes.
Add the flour, seasoned salt, black pepper and the toasted sesame seeds. Blend together on low speed only until evenly mixed, about 1 to 2 minutes. Don’t over work the dough or the crackers will be tough.
Turn the dough out onto a lightly floured surface. Dust your hands with flour and gently pull the dough together then roll into a log about 1-1/4” in diameter.
Wrap the dough in a sheet of parchment paper and place it on a rimmed baking sheet. Cover tightly with plastic film and refrigerate until the dough is well chilled, about 6 hours or overnight.
When you’re ready to bake the crackers, cut the dough into 1/4” slices. Place them on a baking sheet lined with a Silpat liner or with parchment paper.
Bake in a 350-degree oven for 15 to 17 minutes or until the crackers just start turn a light golden color around the edges and on the bottom.
While the crackers are still hot sprinkle a tiny pinch of the seasoned salt over the top, gently pressing into the crackers.
Let cool completely on a wire rack.