Easy Incredible Ice Cream Cake

Preheat the oven to 350 degrees F (175 degrees C). Lightly coat the bottom and sides of two 8-inch round cake pans. (Prep time: 5 minutes)

Blend cake mix, water, oil, and eggs in a large bowl until moistened. Beat with a mixer on medium speed for 2 minutes. Pour into the prepared cake pans. (Prep time: 7 minutes)

Bake in the preheated oven until a toothpick inserted in the center comes out clean, 32 to 38 minutes. (Bake time: 32-38 minutes)

While the cake layers are baking, line a clean 8-inch round cake pan with plastic wrap, allowing the sides to hang over about 6 inches all the way around. Peel down the sides of the ice cream carton and slice off several big pieces; press them into the prepared cake pan. Wrap plastic over the top of the ice cream and continue to form until it's in an even layer. Freeze for 1 hour. (Prep time: 15 minutes, Freeze time: 60 minutes)

Remove cakes from the oven and cool for 10 to 15 minutes in the pans. Transfer to a wire rack and let cool completely, about 30 minutes. (Cooling time: 45 minutes)

Place one cake layer on a freezer-safe plate. Reserve remaining layer for another use (you can freeze it for up to 4 months.) (Prep time: 2 minutes)

Combine chopped cookies and chocolate topping in a medium bowl. Spread cookie 'crunchies' evenly on top of the cake layer. Invert frozen ice cream layer on top of cookie layer with the bottom (smooth side) up. Return to the freezer for 1 hour. (Prep time: 10 minutes, Freeze time: 60 minutes)

Add cream to bowl of a stand mixer fitted with a whisk attachment and whisk on medium speed. Gradually mix in powdered sugar until stiff peaks form. Spread icing evenly over cake and freeze for 1 more hour. (Prep time: 10 minutes, Freeze time: 60 minutes)

Decorate cake with icing and sprinkles and return to the freezer for at least 30 minutes (or up to 1 week) before serving. (Prep time: 10 minutes, Freeze time: 30 minutes)