This copycat Dairy Queen ice cream cake was tested to fix where homemade versions fall apart. The layers stay defined, the fudge holds its place, and the cookie crunch stays intact when sliced.
Line a 9-inch springform pan with plastic wrap. Set it aside.
Heat the oven to 350*. Line a 10 x 15 baking sheet with parchment paper. Set it aside.
Add the crushed chocolate sandwich cookies to a small mixing bowl.
Stir in the melted butter until completely combined.
Evenly spread the coated cookie crumbs on the lined baking sheet. Bake for 7 to 8 minutes. Remove from the oven and allow the cookie crumbs to completely cool.
While the cookie crumbs are baking, remove the chocolate ice cream from the freezer and allow it to soften. This will make spreading the ice cream into the pan much easier.
Once the ice cream has softened for 15 to 20 minutes, evenly spread the chocolate ice cream layer into the prepared springform pan. Place it back in the freezer for 1 hour.
Just before you are ready for the hot fudge layer, remove the lid to the hot fudge and place in the microwave for 20 to 25 seconds to soften the hot fudge. The hot fudge should not actually be hot. You do not want it to melt into the ice cream. It should only be softened to make it easier to spread.
Stir the hot fudge, then using either a silicone spatula, or an offset spatula, evenly spread the hot fudge over the top of the chocolate ice cream layer.
Evenly sprinkle the baked and cooled cookie crumbs over the top of the hot fudge layer, gently pat the cookie crumbs to form a solid layer. Do not press the cookies into the hot fudge. Return to the freezer for 1 hour.
15 to 20 minutes before you are ready to spread the vanilla ice cream layer, remove the vanilla ice cream from the freezer to soften.
Remove the springform pan from the freezer, and evenly spread the vanilla ice cream on top of the cookie crunch layer. Return the springform pan to the freezer for 4 to 6 hours, or overnight.
30 minutes before you are ready to “frost” the ice cream cake, place the mixing bowl in the freezer. If you are using a stand mixer, place the metal bowl in the freezer. If you are using a handheld mixer, place your mixing bowl, preferably a metal mixing bowl, in the freezer for 30 minutes.
Remove the bowl from the freezer, add the heavy cream, powdered sugar and clear vanilla flavoring. Beat on medium, just until the powdered sugar is incorporated, then beat on high until stiff peaks form, about 3 to 4 minutes.
Separate out 1 cup of whipped cream frosting and place in either a decorator’s piping bag fitted with a star shaped tip or a ziploc bag with the corned snipped off.
You will need to work quickly, especially if the weather is warm. Remove the ice cream cake from the freezer.
Remove the outer edges of the springform pan. Using either a cake lifter, or a large sturdy spatula, remove the plastic wrap and place the ice cream cake on either a serving plate or a round decorators board.
Using either a silicone spatula, or an offset spatula, quickly frost the sides and top of the ice cream cake.
Using even pressure, holding the decorators piping bag ½ inch above the edge of the top of the cake, pipe either a shell pattern or swirl pattern around the edge of the ice cream cake.
Evenly sprinkle the colorful sprinkles on the top of the ice cream cake. Place the cake back into the freezer until you are ready to serve.
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Notes
Store any leftovers in a cake carrier for up to 7 days.
If you do not have a springform pan, you can use a round cake pan lined with plastic wrap.
You can substitute any flavors of ice cream for the chocolate and vanilla ice cream.
You can also substitute the hot fudge with caramel, and the chocolate sandwich cookies with vanilla sandwich cookies.