In a medium mixing bowl, combine evaporated milk and pudding mix.
Beat on high speed for 2 minutes (mixture will be really thick).
In another medium mixing bowl, beat cream cheese until light and fluffy, about 3 minutes.
Gradually beat in lemonade concentrate until combined.
Add pudding mixture and powdered sugar. Beat.
Next, add the cool whip and mix just until combined.
Once the pretzel crust has cooled completely, spread lemonade cream cheese mixture evenly over the pretzel crust.
Add the raspberry topping over the cream cheese mixture.
Sprinkle reserved pretzel mixture on top of the raspberry topping.
Cover with aluminum foil or plastic wrap and refrigerate for 4 hours or overnight.