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Frozen Brownie Sundae

Frozen brownie sundae made with baked brownies, a thick layer of vanilla ice cream, and hot fudge swirled on top. Freeze into a scoopable brownie ice cream sundae bar—easy party dessert that feeds a crowd.
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Prep Time 20 minutes
Cook Time 30 minutes
freezing 4 hours
Total Time 4 hours 50 minutes
Servings: 12 servings
Course: Dessert
Cuisine: American
Calories: 430
Ingredients Equipment Method Notes

Ingredients
  

Brownie base
  • 1 box brownie mix (baked in a 9x13 pan, cooled) or homemade
Ice cream layer
  • 0.5 gallon vanilla ice cream, softened
Hot fudge layer
  • 1.5 cups hot fudge sauce, warmed
Toppings
  • 2 cups whipped cream
  • 1 Maraschino cherries
  • 1 rainbow sprinkles
  • 1 chopped peanuts (optional)

Equipment

  • 1 sheet pan

Method
 

Bake and cool the brownies
  1. Bake the brownie mix in a 9x13 pan according to package directions, then cool completely (about 30 minutes after baking) until no longer warm to the touch, for a firm foundation.
Build the frozen sundae bar
  1. Spread the softened vanilla ice cream in a thick, even layer over the cooled brownies so the surface looks level and fully covered.
  2. Drizzle the warmed hot fudge sauce in thick ribbons over the ice cream and swirl gently with a spoon so dark fudgy streaks remain visible.
  3. Freeze for 4 hours until completely firm, with the top fully set so you can lift clean portions.
Serve
  1. Top individual portions with whipped cream, then add an extra drizzle of hot fudge so each scoop has both ice cream and fudgy sauce.
  2. Finish with rainbow sprinkles and a maraschino cherry (plus chopped peanuts if using) for a classic sundae look.
  3. Scoop using an ice cream scoop for neat portions; wipe the scoop between cuts if needed for clean edges.

Notes

Pro tip: for the cleanest slices, press a piece of parchment on top before freezing so the surface sets evenly, then loosen and portion quickly. Store covered in the freezer up to 2 weeks; it can be frozen up to 1 month. For a lighter option, use reduced-fat vanilla ice cream and a reduced-sugar hot fudge sauce if desired.