Coconut Praline Dream Pie

• 9 pastry shell cooled (baked)
• 4 serv
• 2 envelopes dream whip whipped topping mix
• 650 ml milk divided (cold)
• 110 gr angle flake coconut
• 75 gr butter
• 75 gr firmly packed brown sugar (light)
• 60 gr pecans (chopped)
• 4 gr vanilla