Old-Fashioned Rhubarb Cobbler Cake is my kind of spring dessert: part cobbler, part cake, and all about that sweet-tart rhubarb underneath a buttery golden top. It’s simple, a little rustic, and it slices and spoons like something between a cake and a pudding.
The flavor is very classic—rhubarb that stays bright and tangy, with a soft cake-batter cobbler layer that bakes up tender. I like this version because the batter stays light, the fruit gets jammy around the edges, and it’s reliable in a 9×13 rhubarb dessert pan for feeding a group.
I usually serve it warm with vanilla ice cream, but it’s also great with whipped cream when you want something a little lighter. For me, this is one of those easy rhubarb desserts I actually make more than once a season.
Why You’ll Love This Recipe
One-pan dessert: Everything bakes in a single dish, and it’s the kind of old-school dessert that doesn’t need fussy layering or decorating.
That sweet-tart bite: Rhubarb stays pleasantly tangy here, so the finished cobbler cake tastes bright instead of flat or overly sugary.
Golden buttery top: The batter bakes up with a crisped, buttery surface while the inside stays soft, like a baked rhubarb pudding cake.
Great for sharing: A 9×13 pan gives you generous servings, which makes it an easy pick for weekends, potlucks, and casual dinners.
Easy to tweak: You can add strawberries, sprinkle coarse sugar for crunch, or nudge the sweetness depending on how tart your rhubarb is.
Ingredients You’ll Need
Rhubarb Filling
- Rhubarb: Fresh is great, but frozen works too—just thaw it first and drain it well so the filling doesn’t get watery.
- Granulated sugar: This is what tames the tartness. If your rhubarb is extra sharp, bump the sweetness a bit so the filling doesn’t taste harsh.
- Cornstarch: Helps the fruit juices thicken into that jammy cobbler layer instead of turning soupy.
- Vanilla extract: I like what vanilla does with rhubarb—it rounds out the tang and makes it taste more “dessert” and less sharp.
- Ground cinnamon (optional): Not required, but a little cinnamon gives the filling a cozy, old-fashioned feel.
- Salt: Just a pinch makes the fruit taste more like itself and keeps the sweetness from feeling one-note.
Cobbler Cake Batter
- All-purpose flour: Regular flour is perfect here. I wouldn’t swap in cake flour unless you’re willing to experiment.
- Baking powder: This is what lifts the batter so it bakes up cakey instead of dense.
- Salt: Don’t skip it. It keeps the batter from tasting bland next to the tart fruit.
- Granulated sugar: Sweetens the batter and helps the top brown nicely.
- Milk: Any standard milk works. I usually use whole milk, but 2% is fine.
- Unsalted butter: Melted butter gives the top that rich, buttery finish. If you only have salted butter, just ease up on the added salt a touch.
Serving (Optional)
- Vanilla ice cream: My favorite choice with rhubarb. It melts into the warm cobbler cake and tastes simple and classic.
- Whipped cream: Good when you want something lighter than ice cream, especially if you add strawberries to the filling.
Recipe Instructions
- Preheat the oven: Heat the oven to 350°F. Grease a 9 x 13-inch baking dish.
- Mix the filling: In a large bowl, toss the sliced rhubarb with the sugar, cornstarch, vanilla, cinnamon (if using), and a pinch of salt until evenly coated.
- Add the filling to the dish: Spread the rhubarb mixture evenly in the prepared baking dish.
- Mix the dry ingredients: In a medium bowl, whisk together the flour, baking powder, salt, and the remaining sugar.
- Add the milk: Whisk the milk into the dry ingredients until the batter is smooth.
- Add the butter: Drizzle the melted butter into the batter and whisk just until combined. Don’t overmix.
- Add the batter: Pour the batter evenly over the rhubarb. Do not stir—just let it sit on top.
- Bake: Bake for 45 to 55 minutes, until the top is deeply golden and the center is set. The edges should be bubbling.
- Cool: Let the cobbler cake cool for about 15 minutes so the filling thickens up a bit before you scoop it.
- Serve: Spoon into bowls while warm and top with vanilla ice cream or whipped cream, if you like.
Some of my tips!
This is the part that really makes a difference. If you only read one section, make it this one because this is where I share the little trick that helps the recipe turn out so well.
Recipe Tips & Tricks
Cut the rhubarb into fairly even pieces. If you have a mix of tiny slices and big chunks, the small pieces can turn to mush before the larger ones soften.
Drain frozen rhubarb really well. Thaw it completely, then let it sit in a colander for a bit. Extra liquid can keep the filling from thickening the way it should.
Keep the batter on top. Pour it over the fruit and leave it alone. Stirring makes the top heavier and you lose that cobbler-cake look.
Pull it when the center is set. The top should be a deep golden color and the edges should bubble. If the center still jiggles like wet batter, give it a few more minutes.
Coarse sugar is nice for crunch. A light sprinkle over the top before baking gives you a little sparkle and a crispier bite.
Make some touches!
There are plenty of easy ways to serve this depending on the occasion. Keep it simple, or add a few small touches to make it feel a little more special.
Serving Suggestions
- Ice cream: Vanilla is the obvious choice, and it really does work best here. I like a generous scoop so it melts into the warm cobbler cake.
- Whipped cream: Soft whipped cream (not too sweet) is great if you want the rhubarb flavor to stay front and center. A tiny pinch of salt in the cream is nice too.
- Extra fruit: A few sliced strawberries on the side make sense if you’re doing a strawberry-rhubarb version. It makes the plate feel a little fresher.
- Coffee or tea: This is especially good with plain coffee or a strong black tea. It’s a simple dessert, so I keep the drink simple too.
Save it for later
This section covers how to store leftovers and what parts of the recipe you can prepare ahead of time.
Storage and Make Ahead
Store leftovers covered in the fridge for up to 4 days. The topping will soften as it sits, but the flavor stays great.
To rewarm, microwave individual portions until heated through, or warm the whole dish in a 350°F oven. I usually cover it with foil for the first part so the top doesn’t overbrown.
You can bake it earlier in the day and serve it warm later. Just let it cool, cover the dish, then rewarm before serving.
If you want it longer-term, freeze individual portions in airtight containers. Thaw in the fridge overnight and rewarm gently.
A few quick answers
This section covers a few extra details that may help before you head to the recipe card.
Recipe FAQs
Can I use frozen rhubarb?
Yes. Thaw it fully and drain it well, then use it the same way as fresh. If it still seems very juicy, let it sit in a strainer a few extra minutes.
How do I know when the cobbler cake is done?
The top should be deeply golden, the edges should be bubbling, and the center should look set (not wet batter). A toothpick in the cake part should come out mostly clean, but expect the fruit layer to be juicy.
Can I make this strawberry rhubarb?
You can. I like using 3 cups rhubarb and 1 cup sliced strawberries so the strawberries don’t take over. The bake time is usually about the same.
My rhubarb is very tart—should I add more sugar?
Some rhubarb is noticeably sharper than others. If yours is extra tart, add about 1/4 cup more sugar to the filling so the balance is closer to an old fashioned rhubarb cobbler cake.
Does this taste like a cobbler or a cake?
It’s somewhere in between. The fruit bakes up saucy like a cobbler, but the topping is more like a simple cake batter than a biscuit topping, which is why I also think of it as a baked rhubarb pudding cake.
You might also like
Before you go, take a look at a few other recipes below the recipe card. They use similar ingredients in a different way and are worth saving too.
MORE DINNER RECIPES TO TRY
Old-Fashioned Rhubarb Cobbler Cake
INGREDIENTS
Rhubarb Filling
- 4 cups rhubarb sliced 1 2 inch
- 1 cup granulated sugar
- 1 tbsp cornstarch
- 1 tsp vanilla extract
- 1 2 tsp ground cinnamon optional
- pinch salt.
Cobbler Cake Batter
- 1 cup all purpose flour
- 2 tsp baking powder
- 1 4 tsp salt
- 3 4 cup granulated sugar
- 1 cup milk
- 6 tbsp unsalted butter melted.
Serving Optional
- vanilla ice cream
- whipped cream.
INSTRUCTIONS
Prep
- heat oven to 350 F
- grease a 9 x 13 inch baking dish
- toss rhubarb with 1 cup sugar cornstarch vanilla cinnamon and pinch salt until evenly coated then spread in the baking dish.
Batter And Bake
- whisk flour baking powder salt and 3 4 cup sugar
- whisk in milk until smooth
- drizzle melted butter into the batter and whisk just until combined
- pour batter evenly over the rhubarb without stirring
- bake until deeply golden and set in the center with bubbly edges 45 to 55 minutes
- cool 15 minutes to thicken before serving.
Serve
- spoon into bowls while warm and top with ice cream or whipped cream if desired.
