Blueberry Polenta Cake

Whip this up at night, serve it with crowns in the morning. This gluten-free blueberry polenta cake can make any day feel like a celebration.

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• A Soft Slice of Blueberry Magic
• Ingredients
• How to Make This Gluten-free Blueberry Polenta Cake Recipe
• Storage
• Top Tips
• Recipe

It started on the couch. Lin had been watching Barbie: Mariposa & the Fairy Princess, and I'd promised myself I'd get a bit of writing done while it played in the background. But of course, I was pulled in. There she sat, eyes wide, wrapped in a fuzzy blanket with a crown perched slightly crooked on her waves, absolutely enthralled by the Royal Tea Time scene. 

I watched too, because sometimes the best way to be part of their world is to simply sit next to them. And by the time the credits rolled, she looked up at me and said she wanted a tea party. A real one. How could I say no?

We started planning it right then, Lin listing out "pink drink" and "cake with blueberries" as her non-negotiables, while I mentally scanned the fridge for what was left from the week. We decided the party would happen the next day. That gave us time to prepare properly, to make it extra special.

I stood in the kitchen and thought about what this tea party needed. We already had raspberry polenta muffins left over from the weekend, which would make fine scones. But we didn't have a proper centerpiece. Something to anchor the table. Something to slice and serve and savor. And that's when an idea came to life.

A Soft Slice of Blueberry Magic

It's a cousin to the raspberry muffins in every sense. Same love for cornmeal, same nubby texture that makes every bite feel like it has something to say. Where the muffins are more grab-and-go, this blueberry cake is the one you bring out when you want to anchor the moment, to say this is the thing we waited for.

That night, after the kids were tucked in, I crept into the kitchen and got to work. The batter came together slowly, in the kind of silence that only happens after bedtime. Almond flour for tenderness. Fine polenta for texture. Butter creamed with sugar until it felt light in the bowl.

As I folded in the blueberries, I thought of all the ways they'd shown up in our kitchen-pressed into chocolate chip muffins last summer after swimming, tossed into a berry yogurt bark, frozen into cottage cheese popsicles one sunny afternoon when Leo wanted ice cream but we only had fruit. I also love making a double batch of lemon blueberry bread and gifting some to my neighbour!

This cake felt like a continuation of those moments. And maybe a small gift to the little girl inside me who never really got to throw tea parties. I didn't grow up with those kinds of afternoons- but I do now. I get to.

By morning, the cake had cooled, golden and crackled at the top. I wrapped it gently, ready for our royal gathering. Lin wore her tutu, Leo made himself a crown, and we poured tea into real mugs like it was the most important thing in the world.

The blueberry cake sat proudly at the center. We sliced it together, topped each piece with a soft cloud of cream, and shared it between giggles and sticky fingers. In that moment, surrounded by crowns and crumbs and laughter, it felt like the kind of memory that will stay tucked in my heart for a long, long time.

Ingredients

• Fine Polenta - This is what gives the cake its distinctive texture. Coarse enough to have a gentle bite, but fine enough to feel tender. I always use fine polenta over cornmeal because it holds moisture better and creates that crumbly edge I love in both muffins and cakes. 
• Almond Flour - Adds richness and softness to balance the structure from the polenta. It keeps the cake gluten-free, but more importantly, it creates a nutty, mellow backdrop that makes the berries shine. Sub with ground hazelnuts or sunflower seed flour if needed.
• Almond Milk - A mild, slightly nutty milk that complements the almond flour. I use it often because it's what we keep in the fridge. Oat or dairy milk works fine too, just keep it unsweetened so the flavor stays clean.
• Fresh Blueberries - I fold them in gently so some stay whole and others melt into little jam pockets. Use firm, fresh berries if possible. Frozen will work, but coat them lightly in flour to prevent sinking. 
• Demerara Sugar - It creates that golden, crackled crust that makes the first slice feel like opening a gift. Turbinado sugar will work in a pinch, but don't use soft brown sugar, it'll melt instead of crunch.

See the recipe card for full list and exact quantities.

How to Make This Gluten-free Blueberry Polenta Cake Recipe

This blueberry polenta cake comes together in calm, steady steps. Its perfect for a quiet evening bake, when the house has settled and tomorrow's  royal tea party is waiting. Here's how to make it:

Preheat the Oven

Set your oven to 350°F (175°C). Grease a 9-inch springform pan and line the bottom with parchment if you like extra insurance. This cake releases best when it has room to breathe.

Mix the Dry Ingredients

In a medium bowl, whisk together the fine polenta, almond flour, baking powder, and salt. The polenta adds gentle texture while the almond flour brings softness and richness-together, they create a golden, tender crumb.

Cream the Butter and Sugar

In a large bowl, beat the softened butter with the sugar until pale and fluffy. This takes a few minutes, and it's worth the time. The lighter the base, the more delicate the cake will feel.

Add the Eggs, Vanilla, and Lemon Zest

Crack in the eggs one at a time, beating well after each addition. Stir in the vanilla extract and lemon zest. The zest will perfume the batter with quiet citrus notes that complement the blueberries beautifully.

Combine Wet and Dry Ingredients

Add the dry mixture to the creamed butter in two parts, alternating with the almond milk. Begin and end with the dry ingredients. Fold gently to keep the batter light and even.

Fold in the Blueberries

Gently stir in 1½ cups of fresh blueberries. They'll scatter throughout the batter like soft bursts of color and juice. Be careful not to overmix, just enough to distribute them.

Transfer to the Pan and Top with More Berries

Spoon the batter into the prepared pan and smooth the top. Scatter the remaining ½ cup of blueberries across the surface. They'll sink in slightly as the cake bakes, creating those beautiful pockets of blueberry.

Sprinkle with Demerara Sugar

Generously sprinkle the top with demerara sugar. This gives the cake a crisp, golden lid that crackles softly under your knife.

Bake Until Set and Golden

Bake for 45-50 minutes, or until the top is golden and a skewer inserted in the center comes out clean (a streak of blueberry is fine). The edges should feel firm, and the center gently springy.

Cool Before Slicing

Let the cake cool in the pan for 10 minutes, then release the springform sides and allow it to cool completely. This helps the crumb set and makes slicing easier.

Serve and Enjoy

Serve on its own, or with a dollop of whipped cream or a scoop of vanilla ice cream. Best enjoyed in good company (paper crowns optional).

Storage

If you're lucky enough to have a wedge or two of this cake left, it keeps beautifully, one of the reasons I love making it the night before a gathering. Let the cake cool completely, then wrap it gently in parchment or store it in an airtight container at room temperature. It will stay tender for 2 to 3 days.

For longer storage, refrigerate it in a well-sealed container for up to 4 days. You can also freeze individual slices, just wrap them tightly and freeze for up to a month. To serve, thaw overnight in the fridge or let sit on the counter.

Recipe