Hello, dessert lovers! I’m Meriem, your passionate food blogger, and I’m thrilled to share a recipe that’s pure indulgence: Gooey Brown Butter Hot Fudge Brownie Loaf. This rich, fudgy loaf combines the nutty depth of brown butter, intense chocolate flavor, and a luscious hot fudge sauce, all crowned with a scoop of vanilla ice cream. Ready in just over an hour, it’s perfect for special occasions, cozy nights, or whenever you need a chocolate fix. Drawing from your love for decadent chocolate treats (like the Moist Sourdough Chocolate Zucchini Muffins, and Overnight Sourdough Chocolate Sandwich Cookies), this recipe is indulgent, easy to make, and sure to impress. Let’s get baking and drizzling!
Table of Contents
Why You’ll Love This Recipe
- Decadent and Gooey: Fudgy texture with melty chocolate chips and hot fudge.
- Nutty Brown Butter: Adds a rich, caramelized depth to the loaf.
- Showstopper Dessert: Perfect for gatherings with its ice cream and sauce topping.
- Chocolate Overload: Cocoa, chocolate chips, and hot fudge satisfy any craving.
- Make-Ahead Friendly: Loaf and sauce can be prepped in advance for easy serving.
What you will need?
For the Brownie Loaf
- 1½ cups all-purpose flour (180 g)
Purpose: Provides structure for a fudgy yet tender loaf.
Substitution: Use a 1:1 gluten-free flour blend or whole wheat flour (may make loaf denser), as you’ve explored gluten-free options in recipes like the Sourdough Bacon Cheddar Scones. - ½ cup cocoa powder (45 g)
Purpose: Adds rich chocolate flavor and color.
Substitution: Use Dutch-processed cocoa for a smoother taste or carob powder for a caffeine-free option (flavor will differ slightly), as seen in your Sourdough Chocolate Zucchini Muffins. - 1 tsp baking soda
Purpose: Helps the loaf rise and stay soft.
Substitution: Use 2 tsp baking powder if out of soda (texture may be slightly less fudgy). - ½ tsp salt
Purpose: Balances sweetness and enhances chocolate flavor.
Substitution: Use sea salt or reduce to ¼ tsp for low-sodium diets, aligning with your customizable seasoning preferences. - ½ cup salted butter (for loaf, 115 g)
Purpose: Browned to add nutty, rich flavor and moisture.
Substitution: Use unsalted butter (add ¼ tsp salt), vegan butter, or coconut oil for dairy-free (loses some browning flavor), as you’ve used various fats in recipes like the Lemon Zucchini Muffins. - ¾ cup granulated sugar (150 g)
Purpose: Sweetens and tenderizes the loaf.
Substitution: Use brown sugar for a deeper molasses flavor, coconut sugar, or a 1:1 sugar substitute like erythritol (check package for baking ratios), as seen in your Sourdough Oatmeal Breakfast Cups. - 2 eggs, at room temperature
Purpose: Binds and adds structure for a fudgy texture.
Substitution: Use 2 flax eggs (2 tbsp ground flaxseed + 6 tbsp water, let sit 5 minutes) for vegan, aligning with your vegan swaps in recipes like the Sourdough Oatmeal Breakfast Cups. - 1 tsp vanilla extract (for loaf)
Purpose: Enhances sweetness and rounds out flavors.
Substitution: Use ½ tsp almond extract or a vanilla bean (scraped) for a gourmet touch, similar to your preference for bold flavors in baked goods. - 1 cup buttermilk, at room temperature (240 ml)
Purpose: Adds tang and keeps the loaf moist.
Substitution: Use 1 cup milk (dairy or plant-based) + 1 tbsp lemon juice (let sit 5 minutes), Greek yogurt thinned with water, or vegan buttermilk, as you’ve liked tangy ingredients in recipes like the Easy Greek Chicken Meatballs. - ½ cup hot fudge sauce (120 g)
Purpose: Adds gooey, intense chocolate flavor to the loaf.
Substitution: Use melted chocolate mixed with 2 tbsp cream or a store-bought chocolate syrup, though homemade hot fudge (below) is richest. - ½ cup chocolate chips (85 g)
Purpose: Adds melty, sweet bursts of chocolate.
Substitution: Use dark, milk, or white chocolate chips, chopped chocolate bars, or nuts for texture, as you’ve liked mix-ins in the Sourdough Chocolate Zucchini Muffins.
For the Hot Fudge Sauce
- ¼ cup salted butter (55 g)
Purpose: Adds richness and smooth texture to the sauce.
Substitution: Use unsalted butter (add a pinch of salt) or vegan butter for dairy-free. - ⅔ cup semi-sweet chocolate chips (115 g)
Purpose: Provides deep chocolate flavor and thickens the sauce.
Substitution: Use dark or milk chocolate chips or chopped chocolate bars. - 8 oz evaporated milk or half and half (240 ml)
Purpose: Creates a creamy, pourable consistency.
Substitution: Use heavy cream, whole milk, or plant-based milk (e.g., oat or coconut) for dairy-free, though sauce may be thinner. - ¾ cup granulated sugar (150 g)
Purpose: Sweetens and thickens the sauce.
Substitution: Use brown sugar or a 1:1 sugar substitute (adjust for taste), as you’ve used in baked goods. - 6 tbsp cocoa powder (30 g)
Purpose: Intensifies chocolate flavor in the sauce.
Substitution: Use Dutch-processed cocoa or carob powder, as above. - ¼ tsp salt
Purpose: Enhances chocolate and balances sweetness.
Substitution: Use sea salt or omit for low-sodium diets. - 2 tbsp vanilla extract
Purpose: Adds depth and rounds out the sauce’s flavor.
Substitution: Use 1 tbsp for a milder flavor or 1 tsp almond extract for a twist. - Vanilla ice cream, for serving
Purpose: Adds creamy, cool contrast to the warm loaf and sauce.
Substitution: Use dairy-free ice cream, frozen yogurt, or whipped cream.

Equipment Needed
- 9×5-inch loaf pan
- Medium saucepan (for browning butter and making sauce)
- Two mixing bowls (for wet and dry ingredients)
- Whisk and spatula
- Measuring cups and spoons
- Cooling rack
- Optional: Parchment paper (for easy loaf removal)
- Optional: Small whisk (for hot fudge sauce)
Step-By-Step Guiding
Follow these detailed steps to create a gooey brown butter hot fudge brownie loaf
1️⃣ Preheat and Brown Butter
- Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan or line with parchment paper for easy removal.
- In a medium saucepan over medium heat, melt ½ cup salted butter. Continue cooking, swirling occasionally, until it turns golden brown and smells nutty (about 5–7 minutes). Remove from heat and let cool slightly.
- Tip: Watch the butter closely to avoid burning; it should have brown flecks and a caramel-like aroma, as you’ve liked precise techniques in recipes like the Sourdough Chocolate Zucchini Muffins.
2️⃣ Mix Dry Ingredients
- In a large bowl, whisk together 1½ cups all-purpose flour, ½ cup cocoa powder, 1 tsp baking soda, and ½ tsp salt until well combined.
- Tip: Sift cocoa powder if lumpy to ensure a smooth batter, a method you’ve appreciated in chocolate recipes. Whisk thoroughly to distribute leavening agents.
3️⃣ Mix Wet Ingredients
- In another bowl, combine the cooled browned butter, ¾ cup granulated sugar, 2 eggs, 1 tsp vanilla extract, and 1 cup buttermilk. Whisk until smooth and fully blended.
- Tip: Ensure eggs and buttermilk are at room temperature to prevent curdling with the butter, as you’ve preferred in baked goods like the Lemon Zucchini Muffins.
4️⃣ Combine and Fold
- Pour the wet ingredients into the dry ingredients and stir gently with a spatula until just combined. Fold in ½ cup hot fudge sauce and ½ cup chocolate chips until evenly distributed.
- Tip: Avoid overmixing to keep the loaf fudgy, a technique you’ve liked in recipes like the Sourdough Chocolate Zucchini Muffins. The batter will be thick but pourable.
5️⃣ Bake and Cool
- Pour the batter into the prepared loaf pan and smooth the top. Bake for 45–50 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs (not wet batter).
- Let cool in the pan for 10 minutes, then transfer to a wire rack to cool further.
- Tip: Check doneness at 45 minutes to avoid overbaking, as you’ve preferred gooey textures in desserts. Use parchment overhangs to lift the loaf out easily.
6️⃣ Make Hot Fudge Sauce
- In a medium saucepan over medium heat, melt ¼ cup salted butter and ⅔ cup semi-sweet chocolate chips, stirring until smooth.
- Add 8 oz evaporated milk, ¾ cup granulated sugar, 6 tbsp cocoa powder, and ¼ tsp salt. Stir continuously until thickened, about 5 minutes.
- Remove from heat and stir in 2 tbsp vanilla extract. Let cool slightly before serving (sauce will thicken as it cools).
- Tip: Stir constantly to prevent scorching, and adjust thickness with a splash of milk if needed, as you’ve liked smooth sauces in recipes like the Coconut Chocolate Cupcakes.
7️⃣ Serve
- Slice the brownie loaf into 8 pieces. Top each slice with a scoop of vanilla ice cream and a generous drizzle of warm hot fudge sauce. Serve immediately for maximum gooeyness.
- Tip: Warm the loaf slices slightly in the microwave (10–15 seconds) before topping for an extra indulgent texture, a presentation style you’ve enjoyed in decadent desserts.

Topping Suggestions
- Whipped Cream: A fluffy addition alongside ice cream.
- Chopped Nuts: Hazelnuts or pecans for crunch.
- Sea Salt Flakes: A pinch to enhance chocolate flavor.
- Fresh Berries: Raspberries or strawberries for a tart contrast.
- Caramel Drizzle: For extra sweetness and decadence.
- Sprinkles: Fun and colorful for kids or parties.
How to Store & Reheat
- Storage:
- Store the brownie loaf in an airtight container at room temperature for up to 2 days or in the refrigerator for up to 5 days. Store hot fudge sauce separately in the fridge for up to 1 week.
- Tip: Wrap the loaf tightly in plastic wrap to keep it fudgy. Reheat sauce gently before serving, as you’ve liked maintaining texture in desserts.
- Freezing:
- Freeze the loaf (without sauce or ice cream) in a freezer-safe container or wrapped tightly in plastic and foil for up to 3 months. Freeze hot fudge sauce in an airtight container for up to 2 months.
- Thaw the loaf at room temperature for 2–3 hours or overnight in the fridge. Thaw sauce in the fridge and reheat gently.
- Tip: Slice the loaf before freezing for easy portioning, a practice you’ve appreciated in recipes like the Sourdough Oatmeal Breakfast Cups.
- Reheating:
- Loaf: Microwave slices for 10–15 seconds for a warm, gooey texture, or reheat in a 300°F (150°C) oven for 5–7 minutes, wrapped in foil.
- Hot Fudge Sauce: Reheat in a saucepan over low heat, stirring, or microwave in 15-second intervals, stirring until smooth. Add a splash of milk if too thick.
- Tip: Refresh with fresh ice cream and sauce after reheating, as you’ve liked revitalizing desserts in recipes like the Coconut Chocolate Cupcakes.
What to Serve with Gooey Brown Butter Hot Fudge Brownie Loaf
- Fresh Berries: Strawberries or raspberries for a light contrast.
- Coffee: A bold espresso to cut through the sweetness.
- Hot Chocolate: For an indulgent, chocolatey pairing.
- Milk: Classic and refreshing, especially for kids.

Ingredient Substitutions Recap
For quick reference, aligning with your request for substitution details:
- Flour → Gluten-Free Blend: Dietary-friendly, maintains structure.
- Cocoa Powder → Carob Powder: Caffeine-free, milder flavor.
- Buttermilk → Milk + Lemon Juice: Tangy, similar moisture.
- Butter → Vegan Butter: Dairy-free, less nutty flavor.
- Eggs → Flax Eggs: Vegan, binding alternative.
FAQs
How do I keep the loaf fudgy and not cakey?
Avoid overmixing the batter and don’t overbake—check at 45 minutes for moist crumbs on a toothpick. Use room-temperature ingredients for a smooth batter, a technique you’ve liked in fudgy desserts like the Sourdough Chocolate Zucchini Muffins.
Can I make the hot fudge sauce ahead of time?
Yes! Prepare the sauce up to 1 week in advance and store in an airtight container in the fridge. Reheat gently before serving, as you’ve appreciated make-ahead tips in recipes like the Easy Greek Chicken Meatballs.
Can I make vegan brownie loaf?
Yes! Use flax eggs, vegan butter, plant-based milk (for buttermilk, add 1 tbsp lemon juice), vegan chocolate chips, and dairy-free ice cream. Ensure the hot fudge sauce uses plant-based milk, aligning with your vegan tweaks in recipes like the Sourdough Oatmeal Breakfast Cups.
How do I know when the butter is properly browned?
The butter should be golden brown with brown flecks and a nutty, caramel-like aroma after 5–7 minutes. Remove from heat once it reaches this stage to avoid burning, a tip you’ve liked for precise techniques.

Gooey Brown Butter Hot Fudge Brownie Loaf: A Decadent Dessert
- Total Time: 1 hour 10 minutes
- Yield: 8 1x
Description
Indulge in this gooey brown butter hot fudge brownie loaf, topped with vanilla ice cream and rich hot fudge sauce. Ready in 70 minutes, it’s the ultimate chocolate lover’s treat!
Ingredients
- 1½ cups all-purpose flour
- ½ cup cocoa powder
- 1 tsp baking soda
- ½ tsp salt
- ½ cup salted butter (for loaf)
- ¾ cup granulated sugar
- 2 eggs, at room temperature
- 1 tsp vanilla extract (for loaf)
- 1 cup buttermilk, at room temperature
- ½ cup hot fudge sauce
- ½ cup chocolate chips
- Vanilla ice cream, for serving
- ¼ cup salted butter (for hot fudge sauce)
- ⅔ cup semi-sweet chocolate chips (for hot fudge sauce)
- 8 oz evaporated milk or half and half (for hot fudge sauce)
- ¾ cup granulated sugar (for hot fudge sauce)
- 6 tbsp cocoa powder (for hot fudge sauce)
- ¼ tsp salt (for hot fudge sauce)
- 2 tbsp vanilla extract (for hot fudge sauce)
Instructions
- Preheat oven to 350°F (175°C). Grease a 9×5-inch loaf pan. Brown ½ cup butter in a saucepan over medium heat until golden and nutty, then let cool slightly.
- In a bowl, whisk flour, cocoa powder, baking soda, and salt. In another bowl, mix browned butter, granulated sugar, eggs, 1 tsp vanilla, and buttermilk until smooth.
- Combine wet and dry ingredients, then fold in ½ cup hot fudge sauce and chocolate chips. Pour into the loaf pan and bake for 45-50 minutes, or until a toothpick comes out with a few moist crumbs. Let cool for 10 minutes, then transfer to a wire rack.
- For the hot fudge sauce, melt ¼ cup butter and ⅔ cup chocolate chips in a saucepan. Add evaporated milk, sugar, 6 tbsp cocoa powder, and ¼ tsp salt, stirring until thickened, about 5 minutes. Remove from heat and stir in 2 tbsp vanilla.
- Slice the brownie loaf, top with a scoop of vanilla ice cream, and drizzle with warm hot fudge sauce before serving.
- Prep Time: 20 minutes
- Cook Time: 50 minutes
Nutrition
- Serving Size: 1 slice with ice cream and sauce
- Calories: 480 kcal per slice
- Sugar: 38 g
- Sodium: 420 mg
- Fat: 26 g
- Saturated Fat: 15 g
- Unsaturated Fat: 10 g
- Trans Fat: 0 g
- Carbohydrates: 58 g
- Fiber: 4 g
- Protein: 8 g
- Cholesterol: 85 mg
This Gooey Brown Butter Hot Fudge Brownie Loaf is the ultimate chocolate lover’s dessert, with a fudgy loaf, nutty brown butter, and a rich hot fudge sauce topped with creamy vanilla ice cream. Perfect for special occasions or cozy nights, it’s indulgent yet easy to make. Inspired by your love for decadent chocolate treats (like the Moist Sourdough Chocolate Zucchini Muffins and Overnight Sourdough Chocolate Sandwich Cookies), this recipe delivers rich flavor and gooey texture. Try it with your favorite toppings, pair with a coffee, and share your experience in the comments below. Happy baking, and enjoy every indulgent, chocolatey bite!