Flourless orange and almond cake, naturally sweetened

The navel oranges at my local Harris Farm on Darling Street have been extraordinary this past fortnight — thick-skinned, heavy with juice, and so fragrant that the paper bag smells perfumed by the time I get back to my Balmain flat. That is exactly where this cake begins.

Flourless orange and almond cake has been in home kitchens long enough that you might scroll past it. Don’t. The version I’ve landed on after about a dozen test bakes is lighter than most, naturally sweetened with maple syrup instead of refined sugar, and still manages to be the kind of thing you’d quietly cut a second slice of and say nothing about.

Why this cake works the way it does

The technique is old and clever: you boil the whole oranges — skin, pith, everything — until completely tender, blitz them into a rough purée, and use that purée as both moisture and flavour. No peeling, no zesting, no squeezing. The pith, which is normally bitter and disposable, mellows completely over two hours of gentle simmering and actually contributes body to the batter. I know that sounds like a lot of effort for a pith, but the payoff is a depth of citrus flavour you simply cannot get from juice alone.

Ground almonds replace the flour entirely, giving the crumb a soft, slightly dense quality that stays moist for three days. Eggs do the structural work. Maple syrup brings sweetness with a faint woody note that pairs well with orange in a way plain sugar just doesn’t — honestly, I think the maple is what makes this recipe worth sharing rather than keeping to myself.

There is one honest caveat: the boiling step takes two hours. You can do it the night before, refrigerate the oranges and blitz them cold in the morning, which is exactly what I’d recommend. Do that and the rest of the recipe is twenty-five minutes of actual work. If that still sounds like too much of an ask on a Tuesday evening, I’ll be straight with you — it is. This is more of a Sunday cake.

Ingredients

• 2 medium navel oranges (about 500 g total)
• 6 eggs, at room temperature
• 120 ml pure maple syrup (grade A or B, not maple-flavoured syrup)
• 1 tsp vanilla extract
• 300 g almond meal (or ground blanched almonds)
• 1 tsp baking powder
• ¼ tsp fine sea salt
• 1 tbsp extra virgin olive oil, for greasing

Serves 10–12. Gluten-free, dairy-free.

Method

1. Place the whole unpeeled oranges in a medium saucepan. Cover completely with cold water, bring to the boil, then reduce to a steady simmer. Cook for 2 hours, topping up the water as needed to keep the oranges submerged. They should be very soft when pierced with a skewer. Drain and set aside to cool completely — refrigerate overnight if you’re working ahead.
2. Preheat your oven to 170°C fan-forced (190°C conventional). Grease a 23 cm round springform tin with olive oil and line the base with baking paper.
3. Halve the cooled oranges and pick out any seeds. Transfer the entire orange — skin, pith, flesh — to a food processor or blender. Blitz to a smooth-ish purée. It will not be perfectly silky and that is fine; a little texture is good here.
4. Add the eggs, maple syrup and vanilla to the food processor with the orange purée. Blitz again briefly, just until combined.
5. In a large bowl, whisk together the almond meal, baking powder and salt. Pour in the orange-egg mixture and fold gently until you have a uniform batter. It will be looser than a standard cake batter.
6. Pour into the prepared tin. Bake for 55–60 minutes, until the top is deep golden and a skewer inserted in the centre comes out with just a few moist crumbs — not wet batter, but not bone dry either. Tent with foil at the 40-minute mark if the top is colouring too fast.
7. Cool in the tin for 20 minutes, then release the springform ring and transfer to a wire rack. The cake will sink slightly in the centre as it cools. This is normal, not a failure.

What I love about the smell when it hits the oven

Around the 30-minute mark the whole apartment smells like warm marmalade. If you grow herbs on your balcony like I do, this is the moment to step outside, snip a few sprigs of rosemary or thyme, and feel unreasonably pleased with yourself. The smell alone makes the two-hour boil feel worthwhile.

The finished cake is a deep amber on top, with a tender crumb that’s almost custardy at the very centre. The colour is genuinely beautiful — no icing required and I’d argue icing would be a mistake. It hides the thing you worked for.

How to serve it

A thin slice alongside a small spoonful of Greek-style yoghurt is what I come back to every time. The yoghurt cuts through the richness of the almond meal in a way that feels intentional. A few fresh orange segments on the side, or a pinch of finely sliced mint, and you have a plated dessert that looks like considerably more effort than it is.

If you want something colder and a bit more indulgent, the cake is excellent at room temperature with a scoop of coconut yoghurt and a drizzle of extra maple syrup. For an afternoon tea moment, it needs nothing at all beyond a decent cup of tea. Works alongside this warming cold and flu tea in cooler months, or the chia pudding with stewed rhubarb if you’re putting together a longer brunch spread.

A variation worth trying

Swap one of the navel oranges for a large blood orange when they’re in season in late winter — roughly June through August in most parts of Australia. The flavour becomes slightly sharper, more complex, and the purée turns a faint blush pink that colours the crumb in the most unexpected way. It’s subtle, but the kind of thing guests notice and ask about.

You can also fold 60 g of roughly chopped dark chocolate (70% or higher) through the batter just before baking. The chocolate melts into pockets during cooking rather than staying in distinct chips, so each slice gets these small soft veins of bitterness running through the almond crumb. I’ve made this version for people who claimed they didn’t like orange cake. They did not repeat that claim.

On the sugar question generally: maple syrup does contribute some natural sugars, as the Australian Dietary Guidelines published through Eat for Health note that all added sweeteners — natural or otherwise — should be used in moderation. This cake uses less sweetener than most equivalent recipes I’ve come across, and the almond meal provides protein and healthy fats that help balance the overall profile. For more on naturally sweetened baking in the same vein, the carob and raspberry brownie and the dark chocolate and tahini bliss balls are worth a look. And if you’re thinking about the broader role of what you eat in the evenings, foods that support a calmer evening is a piece I keep coming back to.

Storing and keeping

Wrap the cooled cake tightly in beeswax wrap or plastic-free wrap and keep it at room temperature for up to two days, or refrigerate for up to five. It actually improves on day two — the orange flavour deepens and the crumb settles into itself. Freeze individual slices wrapped in baking paper for up to six weeks; thaw at room temperature for an hour. Do not microwave it straight from frozen unless a slightly gummy texture is your thing.

One last note from the Nutrition Australia overview on nuts and seeds: almond meal is a decent source of vitamin E and magnesium, which is a reasonable bonus for what is, at its heart, just a very good cake. That framing is not me trying to make a dessert sound like a health food. It’s just a useful reminder that baking with whole ingredients tends to produce something more nourishing than the packet equivalent, and that is worth something.

Make it for people you’re fond of. Or keep the whole thing for yourself across the week. No judgement here.

— Mei Lin, Golden Door Living kitchen