Mushroom “Sausage” Rolls

Ingredients

• 1 leek, cleaned well and chopped fine
• 1 bulb of fennel, rinsed and chopped fine
• 2 tbsp. olive oil
• 4 cups mixed mushrooms, chopped fine
• ½ cup chopped walnuts
• 3-4 cloves garlic, minced
• 1 tbsp. Dijon mustard
• ½ cup white wine
• sea salt
• freshly ground black pepper
• ½ cup panko breadcrumbs
• 1 cup flat-leaf parsley, about half a bunch
• 1 tbsp. fresh sage leaves, chopped fine
• 1 tbsp. fresh thyme, removed from stems
• 2 sheets of frozen puff pastry, thawed in refrigerator
• ½ cup faux liquid egg or alternative milk
• 2 tsp. sesame seeds, untoasted