Chevre And Portabello Mushroom Tarts

• 32 won-ton wrappers
• 1 black pepper (freshly ground)
• 1 egg (beaten)
• 170 gr chevre crumbled
• 80 gr portabello mushrooms (diced)
• 16 gr green onion (minced)
• 16 ml olive oil
• 14 gr melted butter
• 5 gr all purpose flour
• 4 gr basil leaves (fresh minced)