Whole wheat flour meets orange, raspberries and a buttery lemon curd in this bright cake – a beautiful balance of nutty, citrusy, and rich. Simple enough to serve as a coffee cake, yet easily dressed up to make an impression for a special occasion.

With spring just around the corner (here’s hoping and crossing our fingers), there’s something about a citrus cake that feels oddly optimistic, which is very fitting for the season.

In this recipe, flavors and colors collide, creating a cake that’s wonderfully fragrant and subtly nutty, baking into a crumb that can hold its own against a generous layer of lemon curd. The sharp contrast between the bright, silky lemon curd and the mellow sweetness of the orange comes together in a dessert that feels special enough for brunch, a spring dinner party, or a regular Tuesday afternoon.

Why Whole Wheat

Whole wheat flour — as opposed to all-purpose flour, which is refined — contains the entire grain (bran, germ, and endosperm), offering higher fiber, more nutrients, and a nutty flavor to the final product.

Both come with drawbacks and advantages: all-purpose flour produces a lighter texture and a more neutral taste with a better shelf life, while whole wheat flour creates a denser, heavier, and more crumbly baked good.

Using whole wheat flour in cakes is a great way to add fiber and a nutty, complex flavor, but it requires adjustments. To achieve a successful cake — and in this one specifically — we’re using a mix of 40% whole wheat flour and 60% cake flour, which guarantees the best of both worlds: a light cake with complex flavor. This ratio not only keeps the texture light, but it also maintains the nutritional benefits.

Whole wheat flour is more absorbent than white flour, which means the liquid must be increased. In this recipe, we use a mix of orange juice and Greek yogurt, resulting in a moist cake with a robust structure that is not dry or heavy.

The starch content in the cake flour helps with this, resulting in a tender, delicate, soft-crumbed cake. It inhibits excessive gluten formation, allowing for a lighter texture.

The earthy flavor of the whole wheat highlights the citrus — a cake that really embraces the season. The whole wheat flour brings depth, and the lemon curd brings everything to life.

Ultimately, this whole wheat orange cake is proof that whole grain baking doesn’t have to feel heavy. If you’re looking for a whole wheat cake that still feels celebratory, this is it.

What Makes This Whole Wheat Orange Cake Work

Whole wheat flour contains bran and germ, which can make cakes dense if not handled correctly. This recipe works because:

The batter includes enough fat (butter + yogurt + eggs) to soften the crumb.
Fresh orange juice and Greek yogurt add acidity, which tenderizes gluten.
The sharp lemon curd cuts through the sweetness of the cake, even though the cake itself is not too sweet.
The batter combines cake flour and whole wheat, which keeps the texture light, but the flavors complex.
The starch in the cake flour inhibits excessive gluten formation, also contributing to a lighter texture.

A Berry Layer

In the middle of the batter, I like to add a thin layer of raspberries mashed with a bit of brown sugar. But you’ll notice that as the cake bakes, that layer tends to sink to the bottom, which doesn’t bother me, as it’s meant to be a subtle nod to the topping that ties well with the lemon curd. Anyway, you can skip it entirely, but in case you’re interested, there’s a scientific explanation for why that happens!

Mashed berries are mostly water, and once combined with sugar, they release even more juice. That creates a denser, more fluid mixture than the aerated cake batter. In the early stages of baking, before the eggs set and the starches gelatinize, the batter is still soft enough to allow that heavier fruit layer to move downward. Gravity does the rest.

The result is not a substantial jam pocket in the middle, but a subtle, almost hidden layer at the base of the cake. It doesn’t overpower the orange or compete with the lemon curd. Instead, it adds a gentle tartness and a deeper berry note that quietly ties everything together. The citrus stays bright and forward, while the berries round it out.

This step is optional, but recommended if you want that extra layer of flavor. If you prefer the berries suspended throughout the cake rather than settling at the bottom, you can swirl them lightly into the batter instead of layering them, or toss the mashed berries with a small spoonful of flour to help them hold their place. And of course, you can skip the berry layer entirely — the cake stands beautifully on its own.

FAQ

Can I use all-purpose flour instead of whole wheat?
Yes. Substitute 1:1, but the flavor will be lighter and less nutty.

Can I substitute all-purpose flour for the cake flour?
Absolutely. The texture will be slightly less delicate because cake flour has less protein, which keeps the crumb soft. All-purpose works fine, especially when combined with whole wheat, but the cake might feel a touch sturdier.

Can I use store-bought lemon curd?
Definitely. I use my favorite recipe (that I’ll be sharing soon!), but store-bought lemon curd works beautifully and keeps things simple. As always, homemade curd gives you the chance to adjust sweetness and tartness to taste.

How can I keep the berries from sinking?
If you’d prefer the berries distributed throughout the cake, you can swirl them lightly into the batter instead of layering them, toss the mashed berries with a small spoonful of flour, cook them briefly with a touch of cornstarch to thicken before adding, or simply skip the berry layer entirely.

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If you make this whole wheat orange cake, please let me know in the comments! I’d love to hear from you.