“Thank you for this lovely, simple recipe! Made the rhubarb cake according to instructions and knew right away that I should have made two. ~Nancy
an easy rhubarb cake for breakfast and beyond
The texture of this cake is just perfect, it’s not too sweet, and the tart rhubarb gives it a unique flavor. There’s a nice background note of vanilla in the batter which plays really well with the rhubarb. And then there’s that slightly crunchy sugary crust ~ this rhubarb cake is divine whether you have it for breakfast, snack on it all day, or save it for dessert.
ingredients for rhubarb cake
You’ll just need a few stalks of rhubarb for this breakfast cake recipe, enough to make 2 cups of thin slices. The red color is beautiful, but green rhubarb will give you wonderful flavor too.
- rhubarb
- fresh is best but you can use frozen sliced rhubarb if you have it. If you do use frozen rhubarb, don’t thaw it first or it can become soggy.
- butter
- I always bake with unsalted butter. If you only have salted on hand, just leave out the extra salt in the recipe.
- granulated sugar
- I sprinkle a little extra over the cake before baking which creates a light crunch to the crust.
- egg
- half & half, cream, or buttermilk
- use them interchangeably according to what you have in the fridge.
- all purpose flour
- baking powder
- salt
- lemon juice
- vanilla
- the vanilla and tart rhubarb make a wonderful flavor combo, but I also love it with almond extract, so use your favorite.
Rhubarb FAQs
Is rhubarb a fruit or a vegetable?
- Rhubarb is a tart vegetable (it’s part of the buckwheat family!) that we treat as a fruit in cooking. It grows in long leafy stalks, and kind of looks like red celery. The stalks can be harvested when very young, or when large and mature. Do not eat rhubarb leaves, they are poisonous. They contain oxalic acid, which is toxic to humans.
When is rhubarb season?
- Rhubarb season is April through June, but you’ll see if sooner and later in some areas. Rhubarb is one of the first veggies of spring.
Is rhubarb healthy?
According to Healthline…“Rhubarb is a good source of fiber and antioxidants. Studies show that rhubarb fiber may lower cholesterol.”
Rhubarb is low in calories and high in fiber, making it a great choice for those watching their weight or looking to improve their digestive health. It is also a good source of vitamin K, which is important for bone health.
Why is my rhubarb green?
- Rhubarb varies in color from deep crimson to pale green. Newer varieties, like my Cherry Red rhubarb, is bred for its sweet flavor and intense color, which is nice because that’s one of the things we love about rhubarb and it’s a big drag when the color doesn’t bloom in recipes. There is little difference in flavor between the green and red, but red rhubarb can be stunning when cooked.
How to cook rhubarb?
- Rhubarb can be cooked in a variety of ways, including stewing, baking, and poaching. It is often used in pies, crisps, and crumbles, as well as in sauces and jams. To cook rhubarb, simply cut off the leaves and the tough bottom end of the stalks, then chop them into small pieces and cook them with sugar until they are soft and tender. For cakes and muffins you use raw rhubarb, just slice the stalks to the size needed for your recipe.
Can you freeze rhubarb?
- Rhubarb freezes beautifully. Slice it and lay it out on a parchment paper lined baking sheet. Put the pan in the freezer and freeze until solid. Then transfer the rhubarb to a freezer style zip lock baggie or airtight container.
Do I need to thaw rhubarb before using?
- In most cases there’s no need to thaw the rhubarb when you want to use it for cooking, or baking, just use it frozen.
more rhubarb, please!
Rhubarb is such an unusual ingredient, and strictly seasonal, so I recommend grabbing it while you can.
- Perfect Rhubarb Muffins ~ these fabulous muffins have a light streusel topping.
- Rhubarb Bread ~ a tender quick bread loaded with rhubarb.
- Rhubarb Vanilla Bean Jelly ~ this easy jelly is a stunning color and makes a great gift for friends and neighbors!
- Old Fashioned Rhubarb Crunch ~ one of my faves!
- Ginger Rhubarb Crisp ~ the unique flavor and color of rhubarb is showcased in this easy dessert.
- Norwegian Rhubarb and Almond Cake ~ a lovely tea cake from Scandinavia.
“This recipe is perfection. We had it last night for dessert with ice-cream. This morning we had it with butter for breakfast. It was so fast and easy to put together. You have given me another keeper. Thank you for sharing it with us.” ~Leslie
Rhubarb Cake
Equipment
- 9×9 square baking pan
Ingredients
- 1/2 cup half and half, cream, or buttermilk
- 1 tsp lemon juice
- 1/2 cup unsalted butter at room temperature
- 1 cup granulated sugar plus 2 tsp for sprinkling
- 1 large egg, at room temperature
- 1 1/2 tsp vanilla extract
- 2 cups all purpose flour, saving out 1 Tbsp to toss with rhubarb
- 2 tsp baking powder
- 1 tsp salt
- 2 cups thinly sliced rhubarb
Instructions
- Preheat the oven to 350F Lightly butter a 9×9 square baking pan. I like to line the pan with parchment paper with overhanging ends so I can easily lift out the cooled cake for cutting. That's optional.
- Stir the lemon juice into the half and half and set aside.
- Cream the soft butter and sugar in a stand mixer, or with electric beaters, until fluffy and pale yellow. Beat in the egg and vanilla, scraping down the bowl as necessary.
- Take 1 Tbsp of the flour to the rhubarb and toss well.
- In a separate bowl whisk together the remaining flour, baking powder, and salt.
- Add half of the flour mixture to the bowl and blend in. Add all of the half and half, and blend in. Finally add the rest of the flour and blend just until combined, don't over mix. Fold in the rhubarb. Note: the batter is on the thick side.
- Spread the batter into the prepared pan and sprinkle the top evenly with a little sugar. Bake for about 40-45 minutes, or until the cake is turning golden and a toothpick in the center comes out without wet batter clinging to it (moist crumbs are fine.)
- Let the cake cool slightly before cutting.
Video
Notes
- Other fruit like berries work beautifully in this rhubarb breakfast cake.ย Also try chopped banana.
- Mix the topping sugar with a touch of cinnamon for a hint of spice.
- For a lower fat option try buttermilk in place of the half and half and lemon.ย Half Greek yogurt and half milk would work, too.
Hi I reduced the sugar in a double batch, but it was very moist still. I had to bake it longer, and it was still falling apart. Sugar reduced from 2 cups to 1 1/2 cups. Used buttermilk as I had no half and half or cream.
Would it be possible to make the batter the evening before and then pop it in the oven the next morning? (Trying to maximize my beauty sleep).
I haven’t tried it but theoretically is should work. You could also prep most of it the night before so it would be super quick in the morning.
Mixing the wet and dry ingredients without baking it right away will deflate the baking powder and you’ll get little rise when you do bake it. Better to pre mix the wet with wet and the dry with dry, then in the morning, just combine those two and bake.
Hi Sue, this recipe sounds amazing. Iโd like to make this recipe for an event Iโm going to next month. Would this freeze well? Thank you in advance.
Diana
I think this cake would freeze ok, Diana, but if you’re concerned about finding rhubarb in a month, you might consider slicing and freezing the rhubarb, then using it from frozen. I do think the cake would taste best freshly baked.
I’d like to make a 13×9 cake. Is this recipe convertible to that?
I would double the recipe, Sherrie. Watch the baking time, too.
This cake is wonderful!! Made it yesterday with rhubarb from my garden. I subbed 1 cup of strawberries for 1 c of rhubarb but made no other changes. Delicious, not too sweet, and a hit with all ages!
Nice, love the combo of the berries and rhubarb, thanks for taking the time to come back and let me know Ashley ๐
Is there any way to substitute for the half and half that would keep the same results? I don’t have any on hand, and the nearest store is quite a hike.. especially for one item, but I NEED to make this RIGHT NOW! Ha.
I know the feeling Stacy! I usually feel comfortable substituting milk, almond milk, even yogurt.
Love trying new rhubarb recipes. I am in the process of making this one… I just had to mention – I can’t see how this is a “one bowl” recipe when you have to keep the rhubarb (sprinkled with flour) separate until you combine the flour mixture (in one bowl ) with the butter/sugar mixture (in another bowl) and the half and half brewing with the lemon juice in another dish of some nature. All of these things are reminiscent of making muffins, but I don’t see how to do it in one bowl….
I was confused by your comment so I went back to the post, and I never mention one-bowl, but there it was on the pin! I’ve updated, thanks Vickie!
Thanks for this fabulous recipe. We got some rhubarb from a friend & I found your recipe online. Wanted to try something new. Just made it & it got rave reviews, even from my finicky dad!
So happy to hear this, Linda, it sounds like you’ve got a readymade Father’s Day treat all set!
Hi what is half and half, am I missing something? x
Half and half is a light cream product here in the States, Bernie, it’s half heavy cream and half milk. It’s known as ‘half cream’ in the UK
Made it today I have been baking with coconut sugar ,which is less sweet but still delicious.Great recipe , thank you
Thanks for the recipe, it looks amazing. I’m going to change it to make it paleo, wheat and milk don’t agree with me. I will let you know how it goes.
Please do, I know others would be interested!