Peanut Butter Banana Icebox Cake

Bahan-bahan (16 porsi)

• 1 ½ cups chocolate cookie crumbs
• 6 tablespoons melted butter
• 4 cups heavy whipping cream (divided)
• ¾ cup creamy peanut butter
• ⅓ cup powdered sugar
• 27 chocolate wafer cookies
• 3 small bananas
• Homemade fudge sauce (or store bought, optional)