“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. 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. Half Greek yogurt and half milk would work, too.
After making a double batch of Sue’s yummy rhubarb butter, I had just enough rhubarb left to make this breakfast cake, and it’s another winner. As with the other recipe, I had to substitute a few items to make up for Covid19 pandemic related shortages in my cupboard, but this is a solid and forgiving recipe and it still came out great. I had to use Truvia/cane sugar blend (please forgive the misspelling of it in the rhubarb butter recipe comment I left – I didn’t notice autocorrect’s incorrect correction, LOL!) in place of the sugar at half the volume called for per Truvia’s instructions. No half and half in the house, but reconstituted nonfat dry milk was perfect, and I had to use a quarter cup Egg Beaters for the egg. And it STILL came out delicious! Oh, and I simply buttered my glass pan well, no parchment paper, and it came out nice as could be. Thanks for another winner, Sue!
I love your ingenuity Mary, it’s so uplifting!
Do I use cooked rhubarb or raw? X
Raw, it softens and becomes delicious as it bakes.
What is half and half?
Half and Half is a milk product that is half milk, and half cream. You can substitute cream, milk, or buttermilk.
Its single cream in the UK half and half is a very American term (which means half cream and half milk)
So glad you asked, I was about to ask the same
I didn’t know there was another person that loved rhubarb like I do!!!
How could I add strawberries to this???
You can add chopped strawberries along with the rhubarb, just use the same total amount of fruit. I’ve got lots of delicious rhubarb recipes on the blog Gretchen, just search ‘rhubarb’ in the search bar!
Second time making this.
It’s turned out b beautifully each time.
The cinnamon addition to the sugar on top is nice.
This is a go-to recipe for me for sure!
Thanks Jolene <3
I have made this several times now. It is one of my favorites with a cup of coffee! Thanks for the delightful treat!
I hope you try it with other fruit Michelle 🙂
Can I ask, what is half and half ?
Half and half is a product that is half heavy cream and half milk, so you can make it yourself, easily.
I used one cup strawberries & one cup rhubarb my kids loved it & everyone wanted seconds! Great recipe moist and delicious!
I’m looking for a recipe called rhubarb jack. It’s a dessert: possibly a cake? Can you help?
I did a quick google search and found this: https://www.driftlessappetite.com/?p=35 ~ is that what you’re looking for? It looks like a delicious cake, if I can get some rhubarb I’ll try it this year, if not, next year for sure!
This recipe is amazing. I made rhubarb pies last week, had somebody leftover rhubarb, and searched for a recipe to try. I didn’t have quite enough for this but used some strawberries to make up the difference and it turned out beautifully. The texture of the cake is moist, soft, and I love the little crunch the sugar gives. I love the balance of the tart rhubarb and sweet cake. Overall, great recipe!! I’m going to be using this frequently for the foreseeable future.
Thanks Katelyn, you should try it with other summer fruit, I plan to!