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These easy One Bowl Brownies are chewy, fudgy and deeply chocolatey. The perfect flaked top and chewy interior. Brownies in under 30 minutes!

One bowl brownie with bite taken

There are easily won battles in my professional and blogging life, but this one bowl brownie recipe was not one of them. Sometimes it is the simplest recipes that are the most challenging to develop.

One Bowl Brownie Stacked
Seven Layer Bars Stacked.
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Some of that could have something to do with me being a perfectionist. Maybe.

I had to order cocoa powder three separate times in the testing of this fabulous one bowl brownie recipe. There were tests that were too buttery, too cakey, not chocolatey enough, or not easy enough. Plus, there was the added challenge that I wanted them to be made in one bowl.

One Bowl Brownie Wooden Table

I blame the recent obsession with one bowl desserts on my One Bowl Chocolate Cake. I just can’t stop.  Either I am making an obnoxiously ornate bundt cake or I am making something in one bowl. I will not apologize. And this one bowl brownie recipe should not be apologized for.

Yummy Piece

What Gives this One Bowl Brownie recipe the perfect flaky top?:

The perfect flakey top is a combination of three things:

  1. Melted, hot butter. You have to hydrate the sugar. The water content in butter with hydrate the sugar and it will do it better and faster if it is hot. That is why I mix the butter with the sugar before the eggs, which is a sharp deviation from my usual liquid fat mixing method. Also key is the ratio of sugar to butter for this one bowl brownie glory. There is a lot of both but really an epic amount of sugar.
  2. Whisk those eggs: you are almost using the eggs as leavening. This would be easier to achieve if you add the eggs to the butter first, but hydrating the sugar is more important. This is also easier to achieve if you pre-whisk your eggs, but this requires a second bowl and, thus, is a nice to have but not necessary. I didn’t do it while making these brownies but I will in the future because what is one more bowl in the name of a flakey brownie top, anyways?! This is why it is easier to get that flakey top with a whole egg foam method {link to peppermint brownies}
  3. Cornstarch: this is the crowning glory of the trio. Cornstarch not only gives these brownies the magical chewy, fudgy texture of boxed brownies but will also help you achieve that top flakey crust.
Perfect Flaky Top


Chocolatey Crumb
4.63 from 8 ratings

One Bowl Brownies Recipe

These easy One Bowl Brownies are chewy, fudgy and deeply chocolatey. It has that perfect flaked top and chewy interior. It is truly epic AND made in one bowl.
Prep: 10 minutes
Cook: 20 minutes
Total: 30 minutes
Servings: 12 people



  • Preheat oven to 350°F (not convection).
  • Melt butter in a large heat proof bowl in the microwave or over a pot of simmering water.
  • Whisk sugar into melted and hot butter until smooth.
  • Whisk in eggs and salt, beating very well.
  • Whisk in extracts.
  • Whisk cornstarch, baking powder, flour, cocoa powder and salt into batter. I whisk these together in a second bowl first because I am who I am and we accept this!
  • Bake in preheated oven 18-22 minutes or until it puffs and jiggles like Jell-O when gently shaken.
  • Cool and then slice it up!



Yield: 9×11 inch Pan


Calories: 369kcal | Carbohydrates: 53g | Protein: 4g | Fat: 18g | Saturated Fat: 11g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 95mg | Sodium: 444mg | Potassium: 146mg | Fiber: 3g | Sugar: 40g | Vitamin A: 552IU | Calcium: 29mg | Iron: 2mg
Course: Dessert
Cuisine: American
Calories: 369
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Hi, I’m Chef Lindsey!

I am the baker, recipe developer, writer, and photographer behind Chef Lindsey Farr. I believe in delicious homemade food and the power of dessert!

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Recipe Rating


  1. 5 stars
    Hello! I just made these and they smell delicious! My niece is a coach for a fencing team, and I made them for her to bring to her team. These were very easy to make, and if they are anything like your other recipes, I know they are going to be loved!

    1. Hi Kerry! I can’t wait for your niece’s fencing team to have some! Thank you so much for taking a moment to leave me a comment, it made my day!