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Cake Batter Fudge Brownie Ice Cream Cake

Cake batter fudge brownie ice cream cake layers a fudgy brownie base with funfetti-style cake batter ice cream, hot fudge ribbons, and rainbow sprinkles. It’s a no-bake assembly that freezes into a dense, sliceable frozen birthday cake with a sprinkle-studded top.
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Prep Time 30 minutes
Cook Time 30 minutes
freezing 8 hours
Total Time 9 hours
Servings: 12 servings
Course: Dessert
Cuisine: American
Calories: 520
Ingredients Equipment Method Notes

Ingredients
  

Brownie mix
  • 1 box brownie mix Bake in a 9x13 pan, cool completely before assembling.
Cake batter ice cream
  • 0.5 gallon cake batter or birthday cake ice cream Soften until scoopable for folding with sprinkles.
Rainbow sprinkles
  • 0.5 cup rainbow sprinkles Fold into softened ice cream.
Hot fudge sauce
  • 1 cup hot fudge sauce Warm enough to drizzle.
Whipped topping
  • 2 cups whipped topping Spread over the fully frozen layer before final freeze.
Extra rainbow sprinkles
  • 1 more rainbow sprinkles for decoration Use generously on top for a festive finish.

Equipment

  • 1 sheet pan

Method
 

Bake and cool the brownie base
  1. Bake the brownie mix in a 9x13 pan according to package directions until set and fudgy in the center, about 30 minutes. Cool completely before assembling.
Assemble the frozen cake layers
  1. Soften the cake batter or birthday cake ice cream until spreadable, then fold in the 1/2 cup rainbow sprinkles. Mix until the sprinkles are evenly distributed throughout.
  1. Spread the sprinkle ice cream over the cooled brownies in a thick, even layer. Press gently to level so the cake slices cleanly later.
  1. Drizzle the 1 cup hot fudge sauce over the top and swirl with a knife to form a ribbon effect. Make sure some swirls reach the edges.
  1. Freeze for 6 hours until completely firm. Check firmness by gently tapping the pan; the top should not jiggle.
Finish with whipped topping and freeze again
  1. Cover the firm brownie-ice cream layer with the whipped topping. Spread to the edges in an even blanket.
  1. Shower generously with more rainbow sprinkles for decoration. Add extra if you want a dense sprinkle look.
  1. Freeze for 2 more hours before slicing. Slice with a warm knife for cleaner edges.

Notes

For the cleanest slices, line the 9x13 pan with parchment and freeze until rock-solid. Keep covered in the freezer up to 2 weeks; freezing is yes, and slices re-freeze well after thawing 10 minutes. If you want a lighter option, use sugar-free or reduced-fat whipped topping (texture stays airy while the core layers remain the same).