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Rhubarb Brownies

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Rhubarb brownies combine rich fudgy chocolate and brown butter batter with bits of fresh rhubarb. It may sounds like a strange combination, but trust me it works!

Lifting first slice of rhubarb brownies out of pan.

Thinking about gooey fudge-like brownies is enough to make a sweet tooth swoon on their own. Adding bits of garnet colored rhubarb adds extra moisture and a bit of zing that provides great balance.

These brownies may quickly become one of your favorite ways to enjoy spring’s bounty of rhubarb. They definitely made a good impression here!

A few weeks back we were talking about spring produce on the Cooking With Carlee Facebook page. Everyone was discussing what spring crops they were most looking forward to.

Stack of fudgy rhubarb brownies.

That is when a regular around those parts suggested she was looking forward to rhubarb so she could make rhubarb brownies. I had never had rhubarb and chocolate together and I’ll be honest that the combination struck me as odd.

But I trust Amy and her food judgment, so I knew I had to give them a try. We don’t have any rhubarb, but my parents do and MiMi was nice enough to harvest some stalks for us.

The brownies

Of course to have tasty rhubarb brownies, you need a good base recipe for brownies. This recipe starts with browned butter, giving one more layer of flavor.

To brown the butter, just cook it over medium low heat until the milk solids start to take on a golden color. It will start to smell toasty as well.

Once it starts taking on a bit of color, you will want to stir frequently to avoid scorching. Brown butter is amazing, but burnt butter is a tragedy.

I browned my butter in a enameled cast iron braiser. The light colored interior made it easy to accurately judge the color and there was plenty of room to whip up the batter in the pan as well.

Once the butter is browned, just stir in a few simple ingredients like brown sugar, flour, cocoa powder and an egg and you will find yourself with a thick chocolate batter. Toss in some chopped rhubarb and transfer it to a greased eight inch square pan and you are ready to bake it off.

The results are rich and fudgy. The rhubarb adds great visual appeal and just the tiniest bit of tang. They are fabulous on their own or with a scoop of vanilla ice cream.

A bit about rhubarb

Some people get nervous around rhubarb because they aren’t quite sure what to do with it. Plus there is that bit about the leaves being poisonous.

And while that is technically true and is something to be aware of, don’t let that scare you off. From what I’ve read, you would have to eat as many as eleven pounds of the leaves for them to be fatal.

slice of rhubarb brownie in front of pan.

Now that is one heck of a pile of leaves! I’m not telling you that to be flippant about the risk, but more so to right size it.

The stalks are what you are after anyway, so chop off the leaves and get to work. They are tart, but so pretty and tasty in baked goods.

I’ve never really tried the raw stalks, but I have heard of people dipping the ends in sugar and taking a bite. I can imagine that being a real sweet and sour combination.

I tend to cook rhubarb. I love the pink hue and tart balance it brings to the table.

piece of rhubarb brownie on spatula.

Frequently Asked Questions

Can I make these gluten free?

Sure! Just use gluten free flour or almond flour and bake as directed. They will still be chocolaty, gooey and delicious.

How do you store brownies?

These brownies disappear quickly around here, but you can store them at room temperature for 3-4 days. For longer storage, wrap well and freeze for up to 3 months.

Can I double the recipe?

Yes! And invite me over to help you eat them. Just double all of the ingredients and bake the brownies in a 9×13-inch pan.

Add a couple of minutes to the bake time and you will be enjoying all the rhubarb brownies you can eat!

Some fabulous rhubarb recipes

Peach rhubarb pie combines the tart taste of spring with summer’s sweet fruit. Peach and rhubarb come together under a golden streusel in this perfect fruity pie.

Rhubarb cookies are the perfect afternoon snack or dessert on-the-go. They’re soft, sweet, studded with rhubarb and topped with a smooth cream cheese frosting!

Strawberry rhubarb sauce is so simple to make and so delicious! Strawberry, rhubarb and apples get sweetened with just a touch of honey for a great snack. It is perfect eaten alone or a fun dip for your animal crackers!

Rhubarb cobbler is one of my husband’s favorite desserts. A layer of rhubarb is covered in a sweet buttery crust for the perfect sweet tart treat. Or try a rhubarb crisp with some oats mixed it for another perfect dessert.

Now that I have shared some of my favorite rhubarb recipes, I would love to hear what your favorites are. Tell me about them in the comments below or share them with me on social media.

Did you make this recipe? Please leave a review in the recipe card below!

Lifting first slice of rhubarb brownies out of pan.

Amy’s Rhubarb Brownies

Rhubarb brownies combine rich fudgy chocolate and brown butter batter with bits of fresh rhubarb. It may sounds like a strange combination, but trust me it works!
4.73 from 29 ratings
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Dessert
Cuisine American
Servings 9 Brownies
Calories 239 kcal


  • ½ cup butter
  • 1 cup light brown sugar packed
  • 1 cup all purpose flour
  • ½ teaspoon baking powder
  • ¼ cup cocoa powder
  • 2 Tablespoons milk
  • 1 egg
  • ¾ cup chopped rhubarb


  • Gently cook butter over medium-low heat until it starts to get a light golden color. Stir frequently once it starts taking on color to avoid scorching it. Remove from heat.
    ½ cup butter
  • Meanwhile, grease an 8-inch square baking dish and preheat the oven to 350°F.
  • In a small bowl, stir together the brown sugar, flour, baking powder and cocoa powder.
    1 cup light brown sugar, 1 cup all purpose flour, ½ teaspoon baking powder, ¼ cup cocoa powder
  • Stir egg and milk into the browned better. Then stir in the dry ingredients until just combined.
    2 Tablespoons milk, 1 egg
  • Fold in the chopped rhubarb.
    ¾ cup chopped rhubarb
  • Spoon into prepared pan and bake for 20-25 minutes or until set.


Serving: 1ServingCalories: 239kcalCarbohydrates: 33gProtein: 3gFat: 11gSaturated Fat: 7gPolyunsaturated Fat: 3gCholesterol: 48mgSodium: 124mgFiber: 1gSugar: 20g
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