Rosemary and Parmesan Crackers

INGREDIENTS

• 1/2 cup unsalted butter, softened
• 1/2 teaspoon finely grated lemon zest
• 1 egg yolk
• 3 tbsp heavy cream
• 1/2 cup plus 6 tbsp all purpose flour
• ¾ cup finely grated Parmesan cheese
• 1 tbsp sugar (optional)
• 2 tbsp fresh rosemary finely cut
• 1 tsp sea salt (1/2 tsp in dough and ½ tsp for sprinkle)
• Pinch freshly ground nutmeg
• 1 tbsp Olive oil