Decadent Chocolate Walnut Brownies with Chocolate Frosting

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These Chocolate Walnut Brownies chock full of chocolate and walnuts is what desserts should be! The recipe for these rich, chocolatey, and easy to make homemade brownies is so good you might want to make a double batch! These chocolate brownies are ooey, gooey, and oh so good – your family is going to absolutely love them!

A plate with two Chocolate Walnut Brownies with Chocolate Frosting. Similar photos of the recipe/dish from various angles are used throughout and with different text overlay unless otherwise described.

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Chocolate Walnut Brownies

The full ingredients list and instructions are found in the printable recipe card at the end of this post. I highly recommend reading the blog post all the way through so that you don’t miss any tips or substitution suggestions and to ensure that you have all the ingredients and equipment required as well as understand the steps and timings involved.

Who doesn’t love brownies? I mean, they full of chocolatey flavor and taste so good! What’s not to love?

Now, if you add nuts to a brownie recipe, it provides not only a sweet and salty taste, it also adds a lovely texture to the chocolate dessert.

THEN if you add chocolate frosting on top and a sprinkling of nuts, then that makes these Chocolate Walnut Brownies out of this world awesome!

Brownies are really easy to make, and you need to make a pan of these as soon as possible!

You can make these brownies with or without the frosting, and if you want to switch the nuts to another type – pecans, hazelnuts, or almonds would all work so well.

This recipe uses American cups. They’re a handy piece of kitchen equipment to have along with a kitchen food scale. Having both in your kitchen means you’ll be able to make all of the different recipes on my blog as I use both cups and weighted measures.

Two panel image - chocolate brownies on the top and a bowl of brownie batter on the bottom with a cup of chopped walnuts about to be poured in. Text overlay says"Chocolate Walnut Brownies with Chocolate Frosting"

More Recipes Using Walnuts

One of the hero ingredients in this recipe is walnuts, so here are some more recipes using the same:

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More Brownie Recipes

Looking for more brownies to make? Check these recipes out next:

How Do I Make Chocolate Walnut Brownies?

Just check out the recipe card below with full ingredients, instructions, and demonstration photos. You can print the card out too (don’t worry, the pics don’t print to save your ink!).

Chocolate Walnut Brownies

Chocolate Walnut Brownies

Yield: 12-16
Prep Time: 15 minutes
Cook Time: 26 minutes
Total Time: 41 minutes

These chocolate walnut brownies with chocolate frosting on top is a real decadent sweet treat!


For the Brownies

  • Non-stick cooking spray
  • 1 cup unsalted butter
  • 2 cups granulated sugar
  • 4 large eggs
  • 2 tsp real vanilla extract
  • 1 cup all-purpose flour (plain flour)
  • 1 cup sweetened cocoa powder
  • ¼ tsp salt
  • 1 cup semi-sweet chocolate chips (plain chocolate chips)
  • 1 cup chopped walnuts

For the Frosting

  • ½ cup unsalted butter
  • ⅓ cup unsweetened cocoa powder
  • 1-1½ cup powdered sugar (icing sugar)
  • 2-3 Tbsp whole milk
  • ¼ cup chopped walnuts, for sprinkling, optional


  1. Preheat the oven to 180°C/350°F/Gas 4.
  2. Line an 8x8-inch baking pan with parchment paper and spray with non-stick cooking spray. Set aside.
  3. Cream the butter and sugar in a large mixing bowl. Add the eggs and vanilla and mix until combined.
  4. Chocolate Walnut Brownies Process - mixing the wet ingredients
  5. Add the flour, cocoa powder, and salt to a large bowl and stir to combine.
  6. Slowly add the dry ingredients to the wet until just combined. (Do not over mix or the brownies will turn out “cakey”).
  7. blank
  8. Stir the chocolate chips and walnuts into the batter and transfer to the prepared baking pan.
  9. Chocolate Walnut Brownies Process - adding chocolate chips and walnuts
  10. Spread into an even layer and transfer to the preheated oven.
  11. blank
  12. Bake for 22-26 minutes or until a toothpick inserted into the center comes out clean. Brownies will still be soft and will finish setting while they cool.
  13. Chocolate Walnut Brownies Process - baked brownies
  14. To prepare the frosting, mix the butter with the cocoa powder and 1 cup powdered sugar. Add in one tablespoon of milk at a time until desired consistency is reached. If necessary, add the remaining ½ cup powdered sugar to thicken.
  15. Chocolate Walnut Brownies Process - making the frosting
  16. Once cool, spread frosting on top of the brownies. Add extra chopped walnuts if using.
  17. Chocolate Walnut Brownies Process - frosted brownies
  18. Slice into 12-16 pieces and enjoy!
  19. blank
  20. Sliced Brownies with Walnuts


Can be served with or without the chocolate frosting.

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Nutrition Information:
Yield: 16 Serving Size: 1
Amount Per Serving: Calories: 469Total Fat: 28gSaturated Fat: 14gTrans Fat: 0gUnsaturated Fat: 12gCholesterol: 93mgSodium: 61mgCarbohydrates: 54gFiber: 3gSugar: 42gProtein: 6g

This site uses Nutritionix to provide estimated nutrition. Nutritional information is always approximate and will depend on the quality of ingredients used and serving sizes. If you need exact calories and macros, please do your own calculations.

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Make It A Meal!

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