Pastry horns with prawn and cream cheese filling

Ingredients

• 2 sheets ready rolled puff or flaky pastry
• 1 egg yolk, lightly beaten
• 1 tablespoon sesame seeds
• Filling
• 250 grams cream cheese, room temperature
• 1/4 cup cream
• 2 teaspoons lemon juice
• 1/2 teaspoon smoked paprika
• 2 tablespoons chopped dill or coriander, plus extra to garnish
• 100 grams cooked prawns dried with a paper towel, finely chopped
• salt and freshly ground black pepper, to taste
• dill or coriander, to serve