200 g Swiss Brown Mercer Mushrooms, finely chopped
700 g Beef sausages, skins removed
2 Brown onion, finely diced
1 tbsp Olive oil
2 tsp Garlic powder
3 tbsp Fresh parsley, finely chopped
1 Egg, whisked
2-3 Puff pastry sheets
2 tbsp White sesame seeds or poppy seeds
Salt and black pepper
Tomato relish for dipping, optional