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If you’re looking for a dessert that tastes like summer but won’t completely derail your healthy eating goals, this Strawberry Rhubarb Upside Down Cake is one of my favorite recipes. It combines juicy strawberries, tart rhubarb, and a soft gluten-free cake that’s boosted with protein while keeping the sugar and calories much lower than a traditional upside-down cake.
The first time I tested this recipe, I honestly wasn’t sure if a gluten-free, lower-sugar version would still have that classic buttery texture. After a few batches and a couple little tweaks, it turned into one of those desserts everyone kept asking for again. The fruit caramelizes beautifully while the cake stays moist and tender.
Whether you’re following a gluten-free lifestyle, trying to eat more protein, or simply want a healthier dessert for your family, this recipe delivers plenty of flavor without feeling overly indulgent.
Why You’ll Love This Recipe
- Naturally gluten free
- High in protein compared to traditional cake
- Lower in sugar than classic recipes
- Lower calorie dessert option
- Made with simple grocery store ingredients
- Perfect balance of sweet strawberries and tart rhubarb
- Great for meal prep and brunch gatherings
- Moist texture without heavy frosting
Why This Recipe Is Good
Most upside-down cakes rely heavily on butter, white flour, and lots of brown sugar. This healthier version swaps in gluten-free flour, Greek yogurt, protein powder, and a natural sweetener to create a dessert that’s more balanced nutritionally.
The strawberries provide vitamin C and antioxidants, while rhubarb adds fiber and a pleasantly tangy flavor that prevents the cake from becoming overly sweet.
Adding vanilla protein powder helps increase protein content while also contributing extra sweetness and structure.
It’s one of those desserts that feels comforting but still fits into a healthier lifestyle.
How I Came Across This Recipe
A local farmers market had baskets of bright red strawberries sitting right next to freshly harvested rhubarb, and the color combination immediately caught my eye. Growing up, I had only eaten classic upside-down cakes made with pineapple, so I wondered how strawberries and rhubarb would work together.
After experimenting with several healthier versions, replacing refined sugar with a natural sweetener and increasing the protein using Greek yogurt and protein powder, this recipe became my favorite. It still has the comforting feel of an old-fashioned homemade cake but fits much better into a balanced, everyday eating plan.
Strawberry Rhubarb Upside Down Cake (Gluten Free)
Course: Cakes u0026amp; CookiesCuisine: AmericanDifficulty: Easy8
servings20
minutes40
minutes195
kcal1
hourA healthy and delicious Strawberry Rhubarb Upside Down Cake made with gluten-free flour, protein powder, and Greek yogurt. This moist cake is naturally lower in sugar and calories while delivering fresh summer flavors in every bite. Perfect for breakfast, brunch, or a guilt-free dessert.
Ingredients
- Fruit Layer
2 cups fresh rhubarb, chopped into ½-inch pieces
2 cups fresh strawberries, sliced
1 tablespoon light butter, melted
2 tablespoons monk fruit sweetener or erythritol
1 teaspoon ground cinnamon
1 teaspoon vanilla extract
1 teaspoon cornstarch
- Cake Batter
1½ cups gluten-free 1:1 baking flour
½ cup vanilla protein powder
1 teaspoon baking powder
½ teaspoon baking soda
¼ teaspoon salt
2 large eggs
¾ cup plain nonfat Greek yogurt
½ cup unsweetened almond milk
¼ cup avocado oil
â…“ cup monk fruit sweetener
2 teaspoons vanilla extract
1 teaspoon fresh lemon zest
- Optional Garnish
Fresh sliced strawberries
Lemon zest
Fresh mint leaves
Light whipped topping or plain Greek yogurt
Directions
- Preheat oven to 350°F (175°C) and lightly grease a 9-inch round cake pan.
- In a medium bowl, combine rhubarb, strawberries, melted butter, cinnamon, vanilla, sweetener, and cornstarch until evenly coated.
- Spread the fruit mixture evenly across the bottom of the prepared cake pan.
- In another bowl whisk together gluten-free flour, protein powder, baking powder, baking soda, and salt.
- In a large mixing bowl whisk eggs, Greek yogurt, almond milk, avocado oil, vanilla extract, lemon zest, and sweetener until smooth.
- Gradually add the dry ingredients into the wet mixture and stir until just combined. Do not overmix.
- Pour the batter gently over the strawberry-rhubarb layer and smooth the top with a spatula.
- Bake for 38–40 minutes, or until the center is set and a toothpick inserted comes out mostly clean.
- Allow the cake to cool for 15 minutes before loosening the edges with a knife.
- Carefully invert the cake onto a serving plate and let it rest for another 5 minutes before removing the pan.
- Allow the fruit juices to settle into the cake for the best texture.
- Slice into 8 pieces and serve warm or chilled with Greek yogurt or a light whipped topping.
Notes
- Fresh rhubarb gives the best texture, but frozen rhubarb can be used after thawing and draining.
- Avoid overmixing the batter to keep the cake light and fluffy.
- Letting the cake cool before flipping helps keep the fruit topping intact.
- Store leftovers covered in the refrigerator for up to 4 days.
- Individual slices can be frozen for up to 2 months.
Nutrition Facts
8 servings per container
- Amount Per ServingCalories195
- % Daily Value *
- Total Fat
8g
11%
- Saturated Fat 1.5g 8%
- Cholesterol 42mg 15%
- Sodium 190mg 9%
- Total Carbohydrate
19g
7%
- Dietary Fiber 4g 15%
- Total Sugars 6g
- Protein 12g 24%
- Calcium 10mg 1%
- Vitamin C 35mg 39%
* The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
Equipment Needed
- 9-inch round cake pan
- Mixing bowls
- Measuring cups and spoons
- Whisk
- Rubber spatula
- Cooling rack
- Serving plate
My Own Thoughts While Making This Recipe
One thing I learned after making this recipe several times is not to rush the flipping process.
The first time I flipped it too early, some of the fruit stayed in the pan. Waiting those extra 15 minutes makes a huge difference.
I also like adding a tiny bit of lemon zest because it brightens both the strawberries and rhubarb without overpowering them. Sometimes the simplest little ingredient ends up making the biggest difference.
Estimated Cost
Gluten-free flour: about $2.25
Rhubarb: about $3.00
Fresh strawberries: about $3.50
Greek yogurt: about $1.25
Protein powder portion: about $1.75
Remaining ingredients: about $2.25
Total recipe cost: approximately $14
Cost per serving (8 slices): approximately $1.75
Best Time to Enjoy This Recipe
Breakfast with coffee
Weekend brunch
Afternoon snack
Healthy dessert after dinner
Post-workout treat thanks to the extra protein
Best Season
Late spring
Early summer
Peak strawberry and rhubarb season makes this cake especially flavorful and budget friendly.
Perfect Mood For This Cake
Relaxing Sunday afternoon
Family gathering
Baking on a rainy day
When you’re craving dessert but want something lighter
Perfect Occasions
Mother’s Day brunch
Summer picnic
Backyard barbecue
Baby shower
Weekend family dinner
Holiday breakfast spread
Potluck gathering
Frequently Asked Questions
Can I use frozen strawberries?
Yes. Thaw and drain them well before using to prevent excess moisture.
Can I make this dairy free?
Yes. Substitute a dairy-free Greek-style yogurt and use a plant-based protein powder.
How should I store leftovers?
Store covered in the refrigerator for up to 4 days.
Can I freeze it?
Absolutely. Wrap individual slices and freeze for up to 2 months.
Which protein powder works best?
Vanilla whey isolate or vanilla plant protein both produce excellent results.
Can I make muffins instead?
Yes. Divide the fruit and batter among muffin cups and bake for approximately 20–24 minutes.
Is this recipe diabetic friendly?
It is lower in sugar than traditional cake, but nutritional needs vary. Consult a healthcare professional for personalized guidance.