These one-bowl Rhubarb Cookies are soft, cake-like, and packed with jammy rhubarb. The texture is more like a fluffy muffin top than a crisp cookie. I like to add milk chocolate chips to balance the tart rhubarb but you could make them with or without!
The secret to the soft texture is oil. It coats the flour proteins and keeps gluten from tightening up, so the crumb stays tender. A little sour cream and milk add moisture and a gentle tang.
Rhubarb season is short, so I bake these on repeat while I can. If you love using it up, try my rhubarb crisp and healthy rhubarb muffins too.
Rhubarb Cookie Ingredients
Here’s what goes into these soft cookies.
- Whole milk: Adds moisture for a soft, tender crumb.
- Sour cream: Keeps the dough moist and adds a little tang.
- Unsalted butter
- Egg
- Neutral oil: The trick behind the soft texture. It keeps the crumb tender even after cooling.
- Pure vanilla extract
- All-purpose flour
- Granulated sugar
- Baking powder and baking soda: The combination leaveners that give these their fluffy rise + help soften the rhubarb’s acid.
- Kosher salt
- Rhubarb: Chopped small, for tart bursts in every bite. Fresh or frozen both work.
- Chocolate chips: Milk, dark, or white. OR leave ’em out for an all-fruit cookie.
- Coarse sugar: Sprinkled on top for crunch and a little sparkle.
Full recipe quantities listed in the recipe card at the bottom of the article.
Variations and Substitutions
A few easy ways to switch these up.
- Different fruit: Swap the rhubarb for raspberries or chopped strawberries.
- Different chocolate: Use dark or white chocolate chips in place of milk chocolate.
- Spiced version: Skip the chocolate, swap in light brown sugar, and add 1 tsp cinnamon. Fold in chopped pecans or walnuts for crunch.
Grab These Tools
Here’s what you’ll need on hand.
- Two mixing bowls: One for wet, one for dry.
- Whisk: For the wet ingredients and to combine the dry.
- Rubber spatula: For folding without overmixing.
- Cookie scoop: Optional, but nice for even cookies.
- Baking sheets
- Parchment paper: These cookies stick without it.
- Wire rack: For cooling.
How to Make Rhubarb Cookies: An Easy Guide
This is a one-bowl-each, fold-and-bake kind of recipe. No mixer needed.
Preheat and Mix the Wet Ingredients
Heat the oven to 375°F. In a medium bowl, whisk the milk, sour cream, melted butter, egg, oil, and vanilla until smooth.
Whisk the Dry Ingredients
In a large bowl, whisk the flour, sugar, baking powder, baking soda, and salt. This spreads the leaveners evenly through the flour.
Combine and Fold In the Add-Ins
Pour the wet into the dry and fold until about 80% combined. Add the rhubarb and chocolate chips. Fold gently just until no dry streaks remain.
Scoop, Top, and Bake
Scoop onto parchment-lined baking sheets and sprinkle with coarse sugar. Bake until the tops are bouncy and no longer shiny. Cool on a wire rack to set.
5 Common Mistakes When Making Rhubarb Cookies
Here are the most frequent mix-ups to avoid when making rhubarb cookies:
- Overmixing: Too much stirring develops gluten and toughens the crumb. Fold gently and stop early (like my rhubarb muffin recipe!)
- Chopping rhubarb too big: Large pieces sink and leave hard chunks. Chop small for even bursts in every bite.
- Skipping parchment: These cookies stick badly to a bare pan. Always line your sheets.
- Underbaking: Unlike chewy cookies, these need a full bake. Look for bouncy tops with no shine.
- Wet frozen rhubarb: Frozen works, but thaw and drain it well first. Excess water makes the dough soggy, and still-frozen stalks won’t soften with this short bake time.
Make Ahead and Storage
Bake a batch and keep them around all week.
Storing Leftovers
- Room temperature: Store in an airtight container for up to a week.
- Keep them soft: A slice of bread in the container helps hold the moisture.
Freezing
- Freeze the dough: Scoop and freeze on a tray, then bag. Keeps up to 3 months.
- Bake from frozen: No need to thaw. Just add a couple of extra minutes.
- Freeze baked cookies: Cool fully, then freeze in a container. Thaw at room temperature.
How to Serve These Rhubarb Cookies
These are great warm or at room temperature. Here are a few ways I like to serve them.
- With coffee or Indian chai tea: My favorite afternoon snack.
- Slightly warm: Ten seconds in the microwave melts the chocolate again.
- With ice cream: Sandwich a scoop of vanilla between two cookies.
- On a spring dessert tray: Pair with my rhubarb hand pies and strawberry rhubarb pie.
How to Make the Best Rhubarb Cookies: Final Notes + Secrets
A few food-scientist notes for the best batch every time.
- Oil keeps them soft: Oil stays liquid at room temperature, so the crumb stays tender even after the cookies cool.
- Room-temperature ingredients: Cold milk, sour cream, butter, and egg won’t blend smoothly. See my guide on how to quickly bring ingredients to room temperature.
- Fold, don’t beat: Overmixing builds gluten and makes the cookies dense. A rubber spatula and a light hand keep them fluffy.
- Bake them through: The bouncy, no-shine top is your doneness cue. Underbaked centers stay gummy.
- Fresh vs frozen rhubarb: Fresh gives a thicker cookie with a higher rise. Frozen works well too, just thaw and drain it first.
- Lift with a thin spatula: Even with parchment, a thin metal spatula gets under them cleanly.
FAQs About Rhubarb Cookies
Just skimming through? Here are some quick answers to the commonly-asked questions.
You can use frozen rhubarb in these cookies. Thaw it thoroughly and drain any excess water before chopping and adding it to the batter. Fresh rhubarb gives a thicker cookie with a higher rise, but both versions taste great.
Dense cookies usually come from overmixing. Once the flour goes in, fold gently with a spatula and stop as soon as the dry streaks disappear. Too much stirring builds gluten, which makes the crumb tough rather than soft and cake-like.
Yes, parchment paper is important for these cookies. They stick badly to a bare baking sheet. Parchment lets them lift off cleanly and makes cleanup easy. A thin metal spatula helps you get under them without tearing.
These cookies are done when the tops are bouncy and no longer shiny. Unlike chewy cookies, they need a full bake to set their soft, cake-like texture. Underbaked centers stay gummy, so look for that no-shine cue before pulling them out.
Yes, this dough is great for making ahead. Scoop it onto a tray and freeze, then transfer to a bag for up to 3 months. Bake straight from frozen, adding a couple of extra minutes to the time.
Milk, dark, and white chocolate chips all work in these cookies. Milk chocolate is the classic choice, but dark adds a richer contrast to the tart rhubarb. Use whatever you have, or skip it entirely for a spiced version with cinnamon and nuts.
Chopping rhubarb small spreads it evenly through each cookie. Large pieces can sink and leave hard chunks in the finished cookie. Smaller pieces soften fully as they bake. You get a tart bite throughout, rather than in just a few spots.
These cookies keep in an airtight container at room temperature for up to a week. Their soft texture holds up well. Adding a slice of bread to the container helps keep them moist over several days.
Other Rhubarb Recipes You’ll Love
See also Easy Rhubarb Recipes and Unusual Rhubarb Recipes to Try!
Rhubarb Cookies
Video
Ingredients
- ½ cup whole milk room temperature
- ½ cup sour cream room temperature
- ¼ cup unsalted butter melted
- 1 large egg room temperature
- 1 tbsp neutral oil like avocado
- 1 tsp pure vanilla extract
- 1 ¾ cups all-purpose flour
- ⅔ cup granulated sugar
- 2 tsp baking powder
- ¼ tsp baking soda
- ½ tsp kosher salt
- 1 cup finely chopped rhubarb
- 1 cup milk chocolate chips optional
- 1 ½ tbsp coarse sugar optional
Instructions
- Preheat Your Oven to 375ºF.
- Combine Wet Ingredients: Whisk together the milk, sour cream, melted butter, egg, oil, and vanilla in a medium bowl.
- Mix Dry Ingredients: In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
- Combine Wet and Dry Ingredients: Use a large rubber spatula to scrape the milk mixture into the dry ingredients and use a gentle folding motion to mix the two until 80% incorporated (there will still be floury streaks).
- Add Rhubarb and chocolate: Add the chopped rhubarb and chocolate and continue folding to just combine.
- Prepare Baking Sheets: Drop batter by 1 1/2 tablespoonfuls 2" apart onto parchment-lined baking sheets. Sprinkle with a bit of coarse sugar.
- Bake: Bake for about 11 minutes, until tops are bouncy when pressed and the tops are lightly golden. You don't want an underbaked middle for these cookies.
- Cool: Transfer immediately to wire racks to cool.
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Wow!! These cookies are awesome! Easily my favorite cookies ever, and for my husband too!
I used a scant 1/2 cup of sugar and semi sweet chocolate chips. πππ
Ok, I tried a lot of cookies but I got to admit, never tried this one before. They look so yummy thoough. Thank you for sharing!
This recipe is so delicious!
I really love these cookies. They taste really yummy!!!
Rhubarb cookies are a fantastic treat. The combination of the soft, cake-like texture and the tangy burst of rhubarb is absolutely heavenly.