Preheat oven to 400°F. Line a baking sheet with parchment paper. Set aside.

Roll out puff pastry to 11x13” (it doesn’t have to be exact) and spread with dijon mustard, leaving a 1-inch border free of mustard. Layer sliced meat.

Roll up dough like a jelly roll and place seam side down onto prepared baking sheet.

Brush with beaten egg over puff pastry and top with sesame seeds.

Bake for 30-45 minutes, until puffed and golden.

Allow to cool before slicing.

Serve warm or room temperature.