Fudgy Walnut Brownies One Pan

Featured in: Baking & Sweet Treats

These fudgy brownies are rich and dense, combining deep chocolate flavor with crunchy walnut pieces. The batter is prepared and baked directly in one pan, making the process straightforward and cleanup easy. The result is moist, indulgent brownies with a perfect balance of sweetness and texture. Slightly underbaking enhances their fudginess, while walnuts add a satisfying crunch. Ideal for an approachable yet decadent treat.

Updated on Sat, 13 Dec 2025 11:39:00 GMT
Warm, homemade Fudgy Walnut Brownies in One Baking Pan, rich and fudgy, studded with chocolate chips. Save
Warm, homemade Fudgy Walnut Brownies in One Baking Pan, rich and fudgy, studded with chocolate chips. | flashoven.com

Rich, dense, and irresistibly chocolaty brownies with crunchy walnuts, made effortlessly in a single baking pan for easy cleanup.

I first made these brownies for a family gathering and everyone loved how fudgy and flavorful they turned out.

Ingredients

  • Dry Ingredients: 1 cup (125 g) all-purpose flour, 1/2 cup (45 g) unsweetened cocoa powder, 1/2 teaspoon salt, 1/2 teaspoon baking powder
  • Wet Ingredients: 1 cup (225 g) unsalted butter, 2 cups (400 g) granulated sugar, 4 large eggs, 2 teaspoons vanilla extract
  • Add-ins: 1 cup (120 g) chopped walnuts, 1/2 cup (90 g) semisweet chocolate chips (optional)

Instructions

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Step 1:
Preheat the oven to 350°F (175°C). Grease a 9x13-inch (23x33 cm) baking pan or line it with parchment paper.
Step 2:
In the baking pan, melt the butter in the preheating oven. Remove the pan and stir in the sugar directly into the melted butter until combined.
Step 3:
Add the eggs, one at a time, mixing thoroughly after each addition. Stir in the vanilla extract.
Step 4:
Sift the flour, cocoa powder, salt, and baking powder over the wet mixture in the pan. Gently fold together with a spatula until just combined.
Step 5:
Fold in the chopped walnuts and chocolate chips if using, ensuring theyre evenly distributed.
Step 6:
Smooth the batter evenly in the pan.
Step 7:
Bake for 2832 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs (do not overbake for fudgy brownies).
Step 8:
Cool completely in the pan before cutting into squares.
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Dispense soap hands-free for quick handwashing and easier cleanup while cooking and handling ingredients.
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Dispense soap hands-free for quick handwashing and easier cleanup while cooking and handling ingredients.
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| flashoven.com

These brownies always bring smiles when served warm with vanilla ice cream at family gatherings.

Notes

Serve warm with vanilla ice cream for a decadent treat. Use a spatula or wooden spoon for mixing. A sifter can help evenly incorporate dry ingredients.

Required Tools

9x13-inch (23x33 cm) baking pan, spatula or wooden spoon, measuring cups and spoons, sifter (optional), knife for cutting

Nutritional Information

Calories: 340 per serving. Total Fat: 20 g. Carbohydrates: 38 g. Protein: 4 g.

Gooey, dark Fudgy Walnut Brownies in One Baking Pan, perfectly baked with a crackly top, ready to serve. Save
Gooey, dark Fudgy Walnut Brownies in One Baking Pan, perfectly baked with a crackly top, ready to serve. | flashoven.com
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Enjoy these brownies as a comforting dessert any time. Perfect for sharing with friends and family.

Recipe Questions & Answers

How can I ensure the brownies are fudgy?

To keep brownies fudgy, avoid overbaking them. Remove from the oven when a toothpick shows moist crumbs rather than a clean finish.

Can I replace walnuts with other nuts?

Yes, pecans or hazelnuts can be used instead. For a nut-free version, simply omit them without affecting the texture much.

Why bake the brownies in one pan?

Baking directly in one pan simplifies preparation and cleanup, allowing the butter to melt and mix with sugar and eggs without extra bowls.

Is it necessary to use unsweetened cocoa powder?

Unsweetened cocoa powder provides a rich chocolate flavor without added sugar, balancing sweetness and depth in the final texture.

Can chocolate chips be added to the batter?

Yes, semisweet chocolate chips can be folded into the batter for added bursts of melted chocolate throughout the brownies.

Fudgy Walnut Brownies One Pan

Dense, chocolaty brownies with crunchy walnuts baked in one pan for simple preparation and great taste.

Prep Time
15 min
Baking/Cooking Time
30 min
Time Required
45 min
Recipe by Harper Ward

Recipe Type Baking & Sweet Treats

Skill Level Easy

Cuisine American

Makes 12 Number of Servings

Diet Considerations Perfect for Vegetarians

What You’ll Need

Dry Ingredients

01 1 cup all-purpose flour
02 1/2 cup unsweetened cocoa powder
03 1/2 teaspoon salt
04 1/2 teaspoon baking powder

Wet Ingredients

01 1 cup unsalted butter
02 2 cups granulated sugar
03 4 large eggs
04 2 teaspoons vanilla extract

Add-ins

01 1 cup chopped walnuts
02 1/2 cup semisweet chocolate chips (optional)

How-To Steps

Step 01

Preheat oven and prepare pan: Preheat the oven to 350°F. Grease a 9x13-inch baking pan or line with parchment paper.

Step 02

Melt butter and mix with sugar: Place the baking pan with butter in the oven to melt it. Remove and stir the granulated sugar into the melted butter until combined.

Step 03

Incorporate eggs and vanilla: Add eggs one at a time, mixing thoroughly after each addition, then stir in the vanilla extract.

Step 04

Combine dry ingredients: Sift flour, cocoa powder, salt, and baking powder over the wet mixture in the pan, then gently fold together until just combined.

Step 05

Add walnuts and chocolate chips: Fold in the chopped walnuts and chocolate chips, ensuring even distribution throughout the batter.

Step 06

Spread batter evenly: Smooth the batter evenly in the prepared pan using a spatula.

Step 07

Bake brownies: Bake for 28 to 32 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs; avoid overbaking to maintain fudgy texture.

Step 08

Cool and serve: Allow brownies to cool completely in the pan before cutting into squares.

Essential Tools

  • 9x13-inch baking pan
  • Spatula or wooden spoon
  • Measuring cups and spoons
  • Sifter (optional)
  • Knife for cutting

Allergy Details

Always verify every ingredient for allergens. Talk to a healthcare provider if you're unsure.
  • Contains eggs, dairy, gluten, and tree nuts. Verify ingredient labels for potential cross-contamination.

Nutrition per Serving

Details shown are for general reference. Don’t use as a substitute for medical advice.
  • Calories: 340
  • Fats: 20 g
  • Carbohydrates: 38 g
  • Proteins: 4 g