Rhubarb Upside Down Cake is a moist, buttery dessert topped with tender caramelized rhubarb that turns beautifully glossy and sweet as it bakes. When flipped, the vibrant pink-red rhubarb creates a stunning top layer that makes this cake as visually impressive as it is delicious. This classic-style cake balances tart rhubarb with a soft vanilla base, making it perfect for spring and summer baking. It’s simple, comforting, and ideal for sharing.
Why You’ll Love This Recipe
- Sweet and tangy caramelized rhubarb topping
- Soft, moist vanilla cake base
- Beautiful upside-down presentation
- Perfect for seasonal rhubarb baking
- Simple ingredients and easy steps
- Great for family desserts or gatherings
Ingredients

Rhubarb Topping
- 2 cups rhubarb, chopped
- ½ cup brown sugar
- 3 tbsp butter, melted
- 1 tbsp honey (optional)
Cake Batter
- 1 ½ cups all-purpose flour
- 1 tsp baking powder
- ½ tsp baking soda
- ¼ tsp salt
- ½ cup unsalted butter, softened
- ¾ cup granulated sugar
- 2 large eggs
- 1 tsp vanilla extract
- ½ cup milk
Step-by-Step Instructions

- Preheat oven to 350°F (175°C) and grease a cake pan
- Melt butter and mix with brown sugar in the pan
- Spread chopped rhubarb evenly over sugar mixture
- In a bowl, whisk flour, baking powder, baking soda, and salt
- In another bowl, cream butter and sugar until fluffy
- Add eggs one at a time and mix well
- Stir in vanilla extract
- Alternate adding dry ingredients and milk until smooth
- Pour batter over rhubarb layer
- Bake for 35–40 minutes until golden and set
- Let cool for 10–15 minutes
- Carefully flip cake onto serving plate
- Serve warm or at room temperature
Tips & Variations
- Use fresh rhubarb for best flavor and color
- Do not overmix batter to keep cake soft
- Add strawberries for a sweeter variation
- Sprinkle cinnamon for warm spice flavor
- Let cake rest before flipping for clean release
- Serve with whipped cream or ice cream
- Use parchment paper for easier removal
Storage & Freezer Instructions
- Store covered at room temperature for 1 day
- Refrigerate for up to 4 days
- Reheat slices before serving for best taste
- Freeze cake for up to 2 months
- Wrap tightly before freezing
- Thaw in refrigerator overnight
Serving & Pairing Ideas

- Serve warm with vanilla ice cream
- Add whipped cream on top
- Pair with coffee or tea
- Serve as brunch dessert
- Add caramel drizzle for extra richness
- Garnish with fresh berries
- Serve with custard sauce
Frequently Asked Questions
Can I use frozen rhubarb?
Yes, frozen rhubarb works well. Thaw and drain excess liquid before using to avoid a soggy topping.
Why do I need to flip the cake?
Flipping allows the caramelized rhubarb to become the beautiful top layer of the cake.
Can I reduce the sugar?
Yes, but keep enough sugar for caramelization and balanced flavor with rhubarb’s tartness.
How do I prevent the cake from sticking?
Grease the pan well and allow the cake to cool slightly before flipping.
Ready to Make It?
Rhubarb Upside Down Cake is a stunning, flavorful dessert that highlights the natural tartness of rhubarb with a soft, sweet cake base. It’s simple to prepare and perfect for seasonal baking.
You Might Also Like
- Strawberry Rhubarb Upside Down Cake – fruity twist on a classic favorite.
- Berry Galette – rustic fruit tart with flaky crust.
- Cherry Clafoutis – French baked custard-style dessert.
- Mango Sorbet – refreshing tropical frozen treat.
Rhubarb Upside Down Cake
- Total Time: 1 hour
- Yield: 8 servings 1x
- Diet: Vegetarian
Description
Rhubarb Upside Down Cake – soft vanilla cake topped with caramelized tangy rhubarb.
Ingredients
2 cups rhubarb, chopped
½ cup brown sugar
3 tbsp butter
1 tbsp honey optional
1 ½ cups flour
1 tsp baking powder
½ tsp baking soda
¼ tsp salt
½ cup butter, softened
¾ cup sugar
2 eggs
1 tsp vanilla
½ cup milk
Instructions
1. Prepare rhubarb topping in pan
2. Mix dry ingredients
3. Cream butter and sugar
4. Add eggs and vanilla
5. Combine with dry ingredients and milk
6. Pour over rhubarb
7. Bake until golden
8. Cool and flip onto plate
9. Serve
Notes
Use fresh rhubarb for best flavor
Let cool before flipping
Do not overmix batter
Serve warm for best taste
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice