How to Make Brownies From a Cake Mix

Nothing beats the delicious taste of classic and homemade brownies. This is a no-fail and easy recipe that comes together so quickly. The trick? These rich, dense and incredibly moist brownies are made using a cake mix. They are decadently filled with triple chocolate, flavored by espresso and studded with walnuts, too. You never would guess that they are made with a cake mix! You can also play around with the recipe by adding different flavorings to make them just how you like to eat your brownies.

These rich and dense Cake Mix Brownies are an easy crowd pleaser!

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Things You\’ll Need

  • Store-bought chocolate cake mix

  • Prepackaged frosting or homemade buttercream frosting

  • 9 ounces (25 grams) Dutch processed cocoa powder

  • 1/2 teaspoon finely ground espresso powder, optional

  • 1/4 teaspoon sea salt

  • 6.3 ounces (180 grams) unsalted butter, cubed

  • 3.5 ounces (100 grams) bittersweet dark chocolate, finely chopped

  • 2 teaspoons vanilla bean extract

  • 2 medium eggs

  • 5.3 ounces (150 milliliters) whole milk

  • 1.8 ounces (50 milliliters) vegetable oil

  • 2.6 ounces (75 grams) toasted walnuts (or other nut of choice: pecans, hazelnuts, pistachios, macadamias or almonds), roughly chopped

  • 3.5 ounces (100 grams) dark chocolate chips or chunks, optional

  • 1 cup extra additions, optional (dried sour cherries, cranberries, raspberries, blueberries, strawberries, white chocolate chips, marshmallows, crushed Oreos and cookie or peanut butter)

Step 1: Preheat the Oven

Preheat the oven to 325 Fahrenheit (160 Celsius). Grease an 8-inch (20 centimeter) square baking pan. Line the pan with baking parchment and let the parchment slightly overhang the sides.

Let the parchment paper extend over the sides of the baking pan to make the brownie easier to lift.

Step 2: Whisk the Dry Ingredients

In a medium size bowl, whisk together the chocolate cake mix, cocoa powder, espresso powder and salt. Set the bowl aside.

Whisk the dry ingredients until they are evenly combined.

Step 3: Brown the Butter and Add the Chocolate.

In a medium size saucepan set over medium-high heat, heat the butter, stirring often until it is melted and golden. The butter will begin to foam but will subside as it continues to cook. Continue to heat, swirling the pan occasionally but not stirring, until the butter is brown in color and nutty in aroma. Some brown bits should have formed down the bottom of the saucepan. Remove the saucepan from the heat and pour the butter into a large bowl.

Add the finely chopped dark chocolate to the butter and let it stand for 1 minute to acclimatize and slightly melt the chocolate. Then, using a rubber spatula, stir the chopped chocolate into the butter until the mixture is melted and smooth.

Mix the browned butter and chocolate together until smooth.

Step 4: Add the Vanilla and Eggs

Add in the vanilla bean extract and mix until smooth. Then, using a balloon whisk, whisk in the eggs, one at a time, until the mixture is thick and glossy.

The mixture will be thick and glossy when the eggs have been incorporated.

Step 5: Fold in the Dry Ingredients

In two separate additions, fold the dry ingredients into the chocolate mixture until they are just incorporated.

Use a rubber spatula to fold the dry ingredients into the batter until smooth.

Step 6: Whisk in the Liquid Ingredients

Once all the dry ingredients have been added, whisk in the milk, followed by the oil, until the mixture is smooth.

Add the liquid ingredients and mix until smooth.

Step 7: Fold in the Nuts and Chocolate Chunks

Fold in the nuts, chocolate chunks and additions of choice (if using), until everything is evenly distributed throughout the batter.

Add in the additions and mix until evenly combined.

Step 8: Bake

Pour the batter into the prepared baking pan and spread down the top. Bake for 25 to 30 minutes, or until firm around the edges but the center is still slightly soft. Let the brownie cool in the pan for 15 minutes before turning out onto a wire rack to let cool completely.

Tip

The brownie is ready when a skewer inserted into the middle comes out with a few moist crumbs attached.

Bake until the edges firm but the middle is still slightly soft.

Step 9: Frost

When the brownie has cooled completely, use an offset spatula to spread the prepackaged or homemade frosting over the top of the brownie. Then, to make it easier to cut, chill the brownie in the refrigerator for 20 minutes to slightly harden it before using a sharp knife to slice it into desired-size squares.

Generously spread the frosting all over the brownie top.

Step 10: Serve and Store

Serve the brownies at room temperature, or out of the refrigerator, slightly chilled. They are best served with a tall glass of milk or a strong cup of coffee.

The brownies are best eaten fresh on the day of making but will keep for up to 3 days sealed in an airtight container stored at room temperature, or up to 4 days in the refrigerator.

These Cake Mix Brownies are so incredibly soft, fudgy and rich.

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