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A pan of freshly baked fudgy brownies for a brownie sundae, with a slice being lifted out to show the gooey, chocolatey interior.

Hot Fudge Sundae Brownie: The Ultimate Gooey Dessert

This Hot Fudge Sundae Brownie recipe features a rich, fudgy brownie base topped with creamy ice cream and a decadent homemade hot fudge sauce. It's the ultimate from-scratch dessert that's perfect for any occasion and surprisingly easy to make.
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Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Servings: 9 sundaes
Course: Dessert
Cuisine: American
Calories: 450
Ingredients Equipment Method Notes

Ingredients
  

Fudgy Brownies
  • 1/2 cup unsalted butter melted
  • 1 cup granulated sugar
  • 1/4 cup packed brown sugar
  • 2 large eggs
  • 1 tsp vanilla extract
  • 3/4 cup all-purpose flour
  • 1/2 cup unsweetened cocoa powder
  • 1/4 tsp salt
  • 1 cup semi-sweet chocolate chips
Homemade Hot Fudge Sauce
  • 1/2 cup heavy cream
  • 1/4 cup light corn syrup
  • 1/4 cup packed brown sugar
  • 1/4 cup unsweetened cocoa powder
  • 1/2 cup semi-sweet chocolate chips
  • 2 tbsp unsalted butter
  • 1/2 tsp vanilla extract
For Assembly
  • Vanilla bean ice cream for serving
  • Whipped cream, chopped nuts, and maraschino cherries for topping

Equipment

  • 1 8x8 inch baking pan
  • 2 Saucepan
  • 2 Mixing Bowls

Instructions
 

Making the Fudgy Brownies
  1. Preheat your oven to 350°F (175°C). Grease an 8x8 inch baking pan and line it with parchment paper, leaving an overhang on the sides.
  2. In a medium saucepan, melt the butter over low heat. Remove from heat and stir in the granulated and brown sugars. Whisk in the eggs one at a time, then stir in the vanilla extract.
  3. In a separate bowl, whisk together the flour, cocoa powder, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in the semi-sweet chocolate chips.
  4. Pour the batter into the prepared pan and spread evenly. Bake for 30-35 minutes, or until a skewer inserted into the center comes out with moist crumbs attached. Let cool completely.
Crafting the Homemade Hot Fudge Sauce
  1. In a small saucepan over medium heat, whisk together the heavy cream, corn syrup, brown sugar, and cocoa powder. Bring to a simmer, stirring until smooth.
  2. Remove the pan from the heat and stir in the semi-sweet chocolate chips, butter, and vanilla extract until everything is melted and the sauce is glossy.
Assembly
  1. Place a warm brownie in a bowl. Top with a scoop of vanilla ice cream and a generous pour of warm hot fudge sauce. Garnish with whipped cream, chopped nuts, and a maraschino cherry.

Notes

Don't overbake the brownies for the best fudgy texture.
Use high-quality chocolate for the richest flavor.
The brownies and sauce can be made up to two days in advance for easy assembly.
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