The Best Brownie Marble Cake – 2 in 1

This brownie marble cake gives you the best of both worlds! A fudgy and chocolatey brownie that sits on top of a fluffy vanilla cake, truly a masterpiece!

brownie marble cake

About The Recipe

Can’t decide whether to bake brownies or a cake? Well, with this brownie marble cake, you no longer need to choose one because you can now enjoy both at the same time! This dessert is like a marble cake but instead of chocolate and vanilla cake, it’s brownie and cakey blondies!

The cake in this brownie marble cake is more like a cakey blondie instead of a normal cake. What I did was add more flour and some baking powder to a blondie recipe to make it more fluffy. I also folded in some chocolate chunks to make it more like a cookie dough cake. The brownie however is just an extraordinary fudgy brownie recipe halved.

Why should you try this recipe?

  • Chocolatey: if you love chocolate than this brownie marble cake is perfect for you! Here is more dessert recipes that’ll be perfect for you: Marshmallow Chocolate Poke Cake, Chocolate Walnut Cake.
  • Fudgy and Fluffy: a fudgy brownie marbled together with a fluffy cake, it doesn’t get better than this.
  • Easy: although you have to make two batters, it comes together very quickly and is made with simple ingredients. Plus you don’t need any fancy kitchen tools just two bowls and a whisk.
  • Different: this brownie marble cake recipe is perfect if you want to try out something new. It’s also great as a gift for someone special.
  • Parties: This dessert will be a hit at parties, potlucks, picnics, tea parties or just for you and your family. Trust me there won’t be a crumb leftover :).

What You Need To Make This Recipe

  • Cocoa powder and Espresso: this is only for the brownie batter.
  • Chocolate: I used a bar of semi-sweet chocolate that I roughly chopped up, you could also use chocolate chips any where I used chopped chocolate.
  • Butter: it does not need to be at room temperature because it’s going to be melted anyway for both batters.
  • Eggs: I recommend using them at room temperature, you’ll need three eggs in total, 2 whole and 1 yolk.
  • Brown Sugar: this is only for the cake batter (cakey blondies).

How To Make Brownie Marble Cake

Step 1: Prepare the cake batter:

Whisk together the sugars, vanilla and eggs until fluffy. Add in the melted butter while whisking. Fold in the dry ingredients and the chocolate. Pour the batter into a lined 8 × 8 square baking tray while reserving 2/3 of it.

Step 2: Prepare the brownie batter.

Whisk together the sugar, egg and vanilla until pale and fluffy. Melt the butter and chocolate together and stream that into the bowl while whisking. Fold in the dry ingredients, pour the batter on top of the cake batter.

Step 3: Swirl and Bake!

Use a spoon to dollop on the rest of the cake batter on top of the brownie batter. Then use a toothpick or skewer to swirl around the batter. Sprinkle on some chocolate chunks or chips then bake at 180 °C / 350 °F for 20-25 minutes until a toothpick comes out with some chocolate on it. Cool completely or enjoy warm.

Storing The Brownie Marble Cake

Store any leftovers in an air-tight container at room temperature for up to 3 days.

Freezing Instructions

Store the brownie marble cake in an air tight container or freezer-safe bag and freeze for up to one month. Thaw at room temperature and warm slightly in a microwave for an extra delicious treat.

Pro Tips

  • Don’t overbake them or you will lose the fudgy texture of the brownies, a toothpick poked into it should come out with chocolate smeared on it but not raw batter.
  • Baking time may vary: all ovens are different, so start checking on them at 20 minutes.
  • Measure the dry and wet ingredients properly. For the flour spoon it into a measuring cup and level it using the back of a spoon.
  • If you have a convection oven (oven with a fan setting) I recommend reducing the temperature by 20 degrees.
marbled brownies


Why did my brownies sink in the middle?

This is because the brownies are likely under baked, if a toothpick comes out with thick batter on it, it needs more time in the oven.

Can I make this recipe with gluten-free flour?

I have never tried this recipe with gluten-free flour, but if you do, I’d love to know how it went.

Can I make the brownie marble cake in a different pan?

Of course, if you’re using a round pan I’d recommend you use an 8 inch pan. If you have larger rectangular pans like 9 × 13 pan, double the recipe or the brownie cake will be too thin.

Check out my YouTube Channel for detailed recipe tutorials! Made one of my recipes? Tag me on Instagram, I would love to see your creations!.

Recipe Card

Brownie Marble Cake

This brownie marble cake gives you the best of both worlds! A fudgy and chocolatey brownie that sits on top of a fluffy vanilla cake, truly a masterpiece!

Prep Time: 15 min

Cook Time: 25 min

Total Time: 40 min

Course: Dessert

Servings: 16

Calories: 205kcal


For Cake Batter

  • 1/2 cup brown sugar, (105g )
  • 1/4 cup granulated sugar ( 50g )
  • 1 large egg, room temperature
  • 1 large egg yolk
  • 1 tsp vanilla extract
  • 1/2 cup melted butter (113g)
  • 1 cup + 2 tbsp. all purpose flour ( 136g)
  • 1/2 tsp baking powder
  • 1/2 tsp salt
  • 1/4 cup chocolate, chopped/chips

For Brownie Batter

  • 1/4 + 1/8 cup granulated sugar (75g)
  • 1 large egg, room temperature
  • 1 tsp vanilla extract
  • 1/4 melted butter (57g)
  • 1/4 cup chocolate, chopped/chips
  • 1/2 tsp espresso powder
  • 1/4 cup all purpose flour (30g)
  • 1/4 cup cocoa powder (30g)
  • 1/4 tsp salt


  • 1/8 – 1/4 cup chocolate, chopped/chips


  1. Preheat the oven to 180 °C / 350 °F, and line an 8 × 8 square baking tray with parchment paper.
  2. Prepare the cake batter: In a medium sized bowl whisk the egg, egg yolk, brown sugar, granulated sugar and vanilla extract until pale and fluffy (2 min).
  3. Stream in melted butter while whisking.
  4. Sift in the all purpose flour, baking powder and slat. Fold together until almost combined.
  5. Add in the chocolate and fold until fully combined.
  6. Pour into the baking tray and reserve 2/3 of the batter for later.
  7. Prepare the brownie batter: In a separate bowl whisk the egg, granulated sugar and vanilla extract until fluffy (2 min).
  8. Melt the butter, chocolate together, mix in the espresso powder, then pour it into the bowl while whisking.
  9. Sift in the all purpose flour, cocoa powder and salt. Fold everything together until fully combine. Don’t overmix,
  10. Pour the batter onto the cake batter.
  11. Using a spoon add dollops of the remaining cake batter on top of the brownie batter.
  12. Swirl the cake batter around using a skewer.
  13. Bake for 20 – 25 minutes until a toothpick comes out with a few crumbs sticking to it or chocolate smeared on it.
  14. Cool completely or enjoy warm!


Calories: 204.92kcal

Total Fat: 10.85g

Carbs: 26.03g

Protein: 2.28g

Sodium: 133.87mg

Fiber: 1.13g

Sugars: 16.28g

** Nutritional information is based on third-party calculations and should be considered an estimate only. Actual nutritional content will vary based upon brands used, measuring methods, cooking method, portion sizes, and more. **

Watch Video Tutorial

Brownie Marble Cake Video Tutorial

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