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There’s something satisfying about flipping a cake out of the pan and revealing a layer of glossy, caramelized blueberries on top. This vegan blueberry upside-down cake looks like it took serious effort, but the actual process is straightforward: mix the topping, mix the batter, pour, bake, flip.

The cake itself is made with whole grain flours (white whole wheat and oat flour) and sweetened with maple syrup and coconut sugar instead of refined sugar. It’s a healthier blueberry cake that still tastes like actual dessert. The crumb bakes up soft and tender with a subtle nuttiness from the oat flour. The blueberry topping gets jammy and glossy in the oven, and a little lemon juice in the topping brightens everything up.

Why This Vegan Blueberry Cake Works

The combination of white whole wheat flour and oat flour gives you the fiber and nutrition of whole grains without the dense, heavy texture that whole wheat baking sometimes has. White whole wheat is milled from a lighter variety of wheat, so the crumb stays soft while still being a whole grain flour.

Applesauce and flax eggs replace the eggs and some of the oil, keeping the cake moist without dairy or a lot of added fat. The maple syrup adds sweetness that complements the blueberries better than plain white sugar would. You get a cake that tastes like a real dessert, not a health food compromise.

Baking the blueberries on the bottom and then flipping concentrates their flavor and creates that sticky, jammy layer on top. It’s the same technique used in pineapple upside-down cake, just with blueberries and a plant-based batter.

Blueberry Upside-Down Cake Ingredients

For the Blueberry Topping

3 cups fresh or frozen blueberries
3 tablespoons coconut sugar (or brown sugar)
1 1/2 tablespoons lemon juice
1 1/2 tablespoons melted coconut oil (or applesauce for oil-free)

For the Cake Batter

1 1/2 cups white whole wheat flour
3/4 cup oat flour (blend rolled oats into a fine powder)
6 tablespoons maple syrup
6 tablespoons unsweetened applesauce
1 1/2 tablespoons ground flaxseed + 4 tablespoons water (flax egg)
1 1/2 cups almond milk (or any plant milk)
3 tablespoons melted coconut oil (or more applesauce for oil-free)
3 teaspoons baking powder
1 1/2 teaspoons vanilla extract
3/4 teaspoon cinnamon (optional)
1/2 teaspoon salt
Zest of 1 lemon (optional, adds brightness)

How to Make Vegan Blueberry Upside-Down Cake

Prep the pan. Preheat your oven to 350°F (175°C). Lightly grease a 10 1/4-inch springform pan. If using a regular cake pan, line the bottom with parchment paper so the blueberry topping doesn’t stick.
Make the blueberry topping. In a bowl, mix 3 cups blueberries with 3 tablespoons coconut sugar, 1 1/2 tablespoons lemon juice, and 1 1/2 tablespoons melted coconut oil. Spread evenly over the bottom of the pan.
Make the flax egg. Mix 1 1/2 tablespoons ground flaxseed with 4 tablespoons water. Let it sit for 5 minutes until it thickens into a gel.
Mix the batter. In a large bowl, whisk together 1 1/2 cups white whole wheat flour, 3/4 cup oat flour, 3 teaspoons baking powder, 1/2 teaspoon salt, and 3/4 teaspoon cinnamon. In a separate bowl, combine 1 1/2 cups almond milk, 6 tablespoons maple syrup, 6 tablespoons applesauce, 3 tablespoons melted coconut oil, 1 1/2 teaspoons vanilla, lemon zest if using, and the flax egg. Pour wet into dry and stir until just combined. A few lumps are fine. Don’t overmix or the cake will be dense.
Bake. Pour the batter over the blueberry layer and smooth the top with a spatula. Bake for 35 to 45 minutes. Check at 35 minutes with a toothpick. If it comes out clean, it’s ready.
Cool and flip. Let the cake cool in the pan for 10 to 15 minutes. Run a knife around the edges, then carefully flip it onto a plate so the blueberry layer is on top.

Tips for This Vegan Upside-Down Cake

Don’t skip the cooling time. The cake needs 10 to 15 minutes in the pan to firm up before flipping. If you flip it too soon, the blueberry topping will slide off and the cake may break apart.
Don’t overmix the batter. Stir until the dry ingredients are just incorporated. Overmixing develops the gluten in the flour, which leads to a tough, dense cake instead of a soft crumb.
Frozen blueberries work. No need to thaw them. Just toss them in frozen. The bake time may need an extra 5 minutes.
Make your own oat flour. Blend rolled oats in a blender or food processor until they’re a fine powder. It takes about 30 seconds. 1 cup of oats makes roughly 3/4 cup oat flour.
Line the pan well. If you’re not using a springform pan, lining with parchment is essential. The blueberry topping gets sticky and will glue itself to an unlined pan.

Blueberry Cake Variations

Different fruit – Swap the blueberries for raspberries, sliced peaches, or a mixed berry combination. The technique works the same with any fruit that gets jammy when baked.
Add lemon – Include the lemon zest in the batter and add 1/2 teaspoon lemon extract for a lemon-blueberry version. The vegan blueberry coffee cake takes the blueberry-spice combination in a different direction if you want a streusel-topped option.
Add nuts – Fold 1/2 cup chopped walnuts or almonds into the batter for extra texture and protein.
Gluten-free – Use a 1:1 gluten-free flour blend (one with xanthan gum included) in place of both flours. The texture will be slightly different but still good.
Oil-free – Replace all the coconut oil (both in the topping and batter) with unsweetened applesauce. The cake will be a little less rich but still moist.

How to Store Vegan Blueberry Upside-Down Cake

Cover and store at room temperature for up to 2 days. After that, refrigerate in an airtight container for up to 4 to 5 days. The cake tastes best at room temperature, so let refrigerated slices sit out for 10 to 15 minutes or warm them briefly in the microwave before serving.

For freezing, wrap individual slices tightly in plastic wrap and store in a freezer bag for up to 2 months. Reheat in the oven at 325°F for 10 minutes or microwave for 30 seconds.

Frequently Asked Questions

Can I use frozen blueberries for this cake?

Yes. Use them straight from the freezer without thawing. Frozen blueberries release a little more liquid during baking, so the topping may be slightly juicier. You might need to add 5 extra minutes to the bake time.

What if I don’t have oat flour?

Blend rolled oats in a blender or food processor until they’re a fine powder. That’s all oat flour is. If you don’t have oats either, you can use all white whole wheat flour (2 1/4 cups total), but you’ll lose some of the soft, tender quality the oat flour adds.

Can I use a different flour instead of white whole wheat?

Regular whole wheat flour works but gives a denser, heartier texture. All-purpose flour creates a softer, lighter crumb but isn’t whole grain. For gluten-free, use a 1:1 gluten-free blend that includes xanthan gum as a binder.

Do I need a springform pan?

It makes flipping easier, but it’s not essential. A standard 10-inch cake pan works fine. Just make sure you line the bottom with parchment paper and grease the sides well so the blueberry topping releases cleanly when you flip.

This healthy vegan blueberry upside-down cake is one of those recipes where the flip at the end makes it feel like you did something fancy, even though the actual baking is simple. The whole grain flours, maple syrup, and fresh blueberries make it a dessert you can feel good about serving. If you like blueberry baking, the vegan fluffy blueberry muffins are a quicker option for weekday mornings, and the vegan mixed berry crisp is another easy fruit dessert that comes together fast.

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Vegan Blueberry Upside-Down Cake

This vegan blueberry upside-down cake is soft, tender, and topped with a glossy layer of juicy baked blueberries. Made with whole grain flours and naturally sweetened with maple syrup and coconut sugar, it’s a feel-good dessert that’s simple, beautiful, and full of flavor.

Print Recipe Pin Recipe

Prep Time 20

Cook Time 40

Cooling Time 15

Total Time 1 15

Course Dessert, Snack

Cuisine American

Servings 8 slices

Calories 285 kcal

Ingredients

For the Blueberry Topping:

3 cups fresh or frozen blueberries about 450 g
3 tablespoons coconut sugar or brown sugar 36 g
1 ½ tablespoons lemon juice 22 ml
1 ½ tablespoons melted coconut oil or unsweetened applesauce 22 ml

For the Cake Batter:

1 ½ cups white whole wheat flour 180 g
¾ cup oat flour 90 g
6 tablespoons maple syrup 90 ml
6 tablespoons unsweetened applesauce 90 g
1 ½ tablespoons ground flaxseed 11 g
4 tablespoons water 60 ml – for mixing with flaxseed
1 ½ cups unsweetened almond milk or any plant milk 360 ml
3 tablespoons melted coconut oil or more applesauce 45 ml
3 teaspoons baking powder 12 g
1 ½ teaspoons vanilla extract 7.5 ml
¾ teaspoon cinnamon optional (1.5 g)
½ teaspoon salt 3 g
Zest of 1 lemon optional (about 1 teaspoon or 2 g)

Instructions

Preheat the oven to 350°F (175°C). Lightly grease a 10¼-inch springform pan, or line a standard cake pan with parchment paper.
In a small bowl, mix the blueberries, coconut sugar, lemon juice, and melted coconut oil (or applesauce). Spread this mixture evenly over the bottom of the prepared pan.
3 cups fresh or frozen blueberries, 3 tablespoons coconut sugar or brown sugar, 1 ½ tablespoons lemon juice, 1 ½ tablespoons melted coconut oil or unsweetened applesauce
In a separate small bowl, mix the ground flaxseed with water to make flax eggs. Let it sit for 5 minutes to thicken.
1 ½ tablespoons ground flaxseed, 4 tablespoons water
In a large mixing bowl, whisk together the white whole wheat flour, oat flour, baking powder, cinnamon (if using), and salt.
1 ½ cups white whole wheat flour, ¾ cup oat flour, 3 teaspoons baking powder, ¾ teaspoon cinnamon, ½ teaspoon salt
In another bowl, combine the almond milk, maple syrup, applesauce, melted coconut oil (if using), vanilla extract, lemon zest (if using), and the thickened flax mixture.
6 tablespoons maple syrup, 6 tablespoons unsweetened applesauce, 1 ½ cups unsweetened almond milk or any plant milk, 3 tablespoons melted coconut oil or more applesauce, 1 ½ teaspoons vanilla extract, Zest of 1 lemon
Pour the wet ingredients into the dry ingredients. Stir gently until just combined. Do not overmix. A few small lumps are okay.
Pour the batter evenly over the blueberry mixture in the pan. Smooth the top with a spatula.
Bake for 35 to 45 minutes, or until a toothpick inserted in the center comes out clean.
Let the cake cool in the pan for 10 to 15 minutes. Then carefully flip it onto a serving plate so the blueberry topping is on top.
Slice, serve, and enjoy!

Video

Notes

You can use fresh or frozen blueberries. No need to thaw if using frozen.
For an oil-free version, replace all coconut oil with unsweetened applesauce.
To make your own oat flour, blend rolled oats in a high-speed blender until fine.
Regular whole wheat or all-purpose flour can be used instead of white whole wheat.
Let the cake cool slightly before flipping to avoid breaking the topping.

Keyword blueberry, Cake, healthy dessert