Rhubarb Coffee Cake

Homemade Buttermilk Rhubarb Coffee Cake is a delicious spring and summer dessert! Easy to make with simple ingredients and so tasty! So good with strawberries added in too!

a slice of cake on a white plate.

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unsliced cake in a white baking dish with a red and white checkered napkin.

This recipe was photographed and updated 4/2024.

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It's officially springtime in Minnesota! The rhubarb is ready! Us Minnesotans can't get enough of rhubarb this time of year, so I will be posting a few new rhubarb recipes within the next couple weeks.

We just got home from a wonderful 3 day weekend in Mankato at my sister's house. It was their city wide garage sales, plus we made some great food and tried out some wine at Wine Cafe! 

We tried out a bottle of Fox Run wine from Morgan Creek Vineyards, which tastes just like concord grapes. Delicious! If you're in MN, check out your local liquor store and try it out.

Back to the recipe.... this old fashioned rhubarb coffee cake is something fantastic! I found this recipe in an old church cookbook.

The cake is moist, and the topping with nuts and brown sugar is wonderful. What makes it even better, is the homemade icing that tops it all off. 

Make sure you have some friends or family around to help you eat this cake because it's so easy to want to devour it all yourself!

If you love rhubarb, then you'll want to try these Brown Sugar Rhubarb Cookies or this Rhubarb Magic Crust Custard Pie!

Keep scrolling for the full printable recipe 💙

a piece of cake on a fork.

You can add or substitute with these ingredients:

  • use brown sugar instead of granulated sugar for the icing
  • add some diced fresh strawberries in the batter
  • use almond extract instead of vanilla

Recipe tips:

  • If you don't have buttermilk, make your own! Add one tablespoon vinegar or lemon juice to a liquid measuring cup. Add milk until you reach the one cup mark. Stir, let set for 5 minutes, then use!

Rhubarb Coffee Cake on a white plate.
Yield 12 pieces
Author Hot Eats and Cool Reads
Prep time
15 Min
Cook time
40 Min
Total time
55 Min

Rhubarb Coffee Cake


  • Cake:
  • 1/2 cup butter, softened
  • 1 1/2 cups granulated sugar
  • 1 large egg
  • 1 cup buttermilk
  • 1 teaspoon vanilla extract
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 2 1/2 cups all purpose flour
  • 3 cups sliced rhubarb
  • 1 cup brown sugar
  • 1/2 cup chopped nuts
  • Icing:
  • 1/4 cup butter, softened
  • 1/2 cup granulated sugar
  • 1/4 cup evaporated milk
  • 1 teaspoon vanilla extract


  1. Cake:
  2. Preheat the oven to 350 degrees F. Grease a glass 9x13 baking dish.
  3. In a bowl, mix together the butter, sugar, egg, buttermilk, vanilla, baking soda, salt, and flour with an electric mixer.
  4. Fold in the rhubarb. Pour into the baking dish and spread evenly.
  5. Sprinkle with brown sugar and chopped nuts. Bake for 40-50 minutes, until a toothpick or cake tester inserted comes out clean.
  6. Icing:
  7. In a small saucepan, heat the butter, sugar, evaporated milk and vanilla over medium heat.
  8. Heat until mixture is combined and sugar is dissolved completely.
  9. Remove from heat and pour over cake while still hot. Cool and serve!

Nutrition Facts




16.09 g

Sat. Fat

8.27 g


75.05 g


1.79 g

Net carbs

73.28 g


52.55 g


5.31 g


314.22 mg


48.21 mg

Hot Eats and Cool Reads is not responsible for the outcome of any recipe you try from this blog/website. You may not always have the same results I do due to variations in ingredients, humidity, altitude, cooking temperatures, typos, errors, omissions, or individual cooking abilities. 

You are solely responsible for ensuring that any nutritional information provided is accurate, complete, and useful. I am not a certified nutritionist and make no claims to the contrary. Each individual's dietary needs and restrictions are unique to the individual.

Our favorite kitchen equipment and supplies used with this recipe:

a fork being poked into a piece of cake on a white plate.

Author photo collage with text that reads, Hey, I'm Sheena! Hope you found a recipe you love! Thanks so much for stopping by!

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  1. I am a huge rhubarb fan! This looks delicious- Pinning!

  2. I adore rhubarb but don't use it enough. This is a fantastic way to enjoy it

  3. I love seeing rhubarb recipes so I'm looking forward to what is coming! This cake looks so moist and wonderful.

  4. All I would need is a cup of java to go with a slice of this cake! Looks so moist and tasty!

  5. I've never had coffee cake, but I've been meaning to. This one looks like the perfect recipe to start with!

  6. I have to say that I have never really gotten into the whole rhubarb craze, but this coffee cake has me pretty much convinced to give it a go! :) Looks delicious!

  7. I absolutely adore rhubarb! This cake looks wonderful!

  8. This is such a great idea Sheena! I better make one of these for my co-workers, they would love it!

  9. Sheena...I am absolutely drooling. My mom use to make a wonderful rhubarb coffee cake...must be much like this one, but we never got to enjoy the lovely glaze you add to yours. YUMMMERS! I am pinning your rhubarb roundup....Thanks so much for sharing with us at Weekend Potluck. Hope you enjoy a wonderful and safe holiday weekend.

  10. Sheena,I remember my Grandma making and growing rubarb. I'm in Texas now and I hope to find rubarb to try this recipe out. I asked my husband if he had ever tried rubarb and he had no idea what it was. Ha-ha.


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