Prepare the puff pastry by rolling out one sheet into a rectangle of approximately 10x12 inches.

Spread 1 ½ tablespoons of Dijon mustard evenly across the surface of the pastry, leaving a small border.

Layer 6 slices of deli ham on top of the mustard, then sprinkle 1 cup of grated cheese over the ham.

Carefully roll the pastry tightly into a log shape and chill in the refrigerator for 20 minutes.

Repeat the process for a second log with the remaining ingredients.

Preheat your oven to 375°F (190°C) and line two baking sheets with parchment paper.

Slice the chilled logs into ½-inch thick pinwheels and arrange them on the baking sheets.

Bake for 18 minutes until puffed and golden brown, then garnish with fresh parsley before serving warm.