No Bake Peanut Butter Fudge Cheesecake

I found this on betterrecipes.com - it looks like an interesting recipe, and I'm really curious to find out if it "works". Please, if you try this recipe, let me know what you think. Thanks! (Cook time is chill time.)

• Ready In: 3 hrs 15 mins
• Serves: 8
• Yields: 1 pie

Ingredients

• 1  cup creamy peanut butter
• 1  cup powdered sugar
• 1⁄4 cup milk
• 3 (8 ounce) packages cream cheese, softened
• 1 (19 1/2ounce) box  dry  fudge brownie mix
• 1 (9 inch)  prepared  chocolate cookie pie crust
• 1 (8 ounce) container  whipped topping, thawed
•  chocolate shavings (to garnish)

Directions

1. Combine peanut butter, sugar, and milk in mixing bowl, then pour into crust.
2. Mix together cream cheese, brownie mix then fold in whipped topping and blend well.
3. Spread peanut butter layer in crust.
4. Garnish with shavings and chill 3 hours or overnight.