Buckwheat Apple Cake with Cinnamon and Brown Sugar

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There’s something about buckwheat that feels honest. It doesn’t pretend to be neutral. It brings a slightly earthy, almost roasted note that pairs with apple better than I expected the first time I made this.

I landed on this recipe after a fall weekend with too many apples and half a bag of buckwheat flour I’d bought for pancakes and never finished. One bowl, a loaf pan, forty minutes in the oven.

The result was a cake with a dark crumb, a soft center, and a crust that crinkled just enough at the edges. Not fussy. Not fancy. Just genuinely good.

If you’ve never baked with buckwheat before, this is a solid starting point, though the gluten-free baked grain dessert world has plenty more to explore once you’re comfortable. The apple keeps it from tasting too intense, and the cinnamon rounds everything out.

Why You’ll Love This Recipe

• One bowl, no mixer needed, minimal cleanup
• Buckwheat flour adds nutty depth without heaviness
• Grated apple keeps the crumb moist for days
• Naturally gluten-free when made with certified buckwheat

Ingredient Notes

• buckwheat flour: Use raw (light) buckwheat flour for a milder flavor, or dark buckwheat for a more intense, earthy taste. Both work here – just don’t sub regular wheat flour or the texture changes entirely.
• apples: Granny Smith holds up well and adds tartness, but Braeburn or Honeycrisp also work. Grate them on the large holes of a box grater and don’t squeeze out the liquid – that moisture is what keeps the cake from drying out.
• brown sugar: Light or dark brown sugar both work. Dark gives a slightly more caramel-forward sweetness that pairs nicely with buckwheat.
• eggs: Two large eggs give the structure this cake needs. I haven’t tested a flax egg substitute here, so I can’t promise results.
• neutral oil: Sunflower, grapeseed, or light olive oil all work. Melted butter also works and adds richness, though the cake won’t be dairy-free.
• cinnamon: A full teaspoon is the baseline. You can push to 1.5 tsp or add a pinch of cardamom if you want more spice complexity.

Buckwheat Apple Cake with Cinnamon and Brown Sugar

A one-bowl buckwheat apple cake with grated apple, brown sugar, and cinnamon. Naturally moist, subtly nutty, and ready in about 45 minutes.

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Prep Time 15 minutes mins

Cook Time 40 minutes mins

Total Time 55 minutes mins

Servings: 8 slices

Calories: 245

Ingredients Method Notes

Ingredients

  

• 200 g buckwheat flour light or dark, both work
• 1.5 tsp baking powder
• 0.5 tsp baking soda
• 1 tsp ground cinnamon increase to 1.5 tsp for more spice
• 0.25 tsp fine sea salt
• 2 large apples grated on large holes, about 250 g grated weight, Granny Smith or Braeburn
• 130 g brown sugar light or dark
• 2 large eggs at room temperature
• 80 ml neutral oil sunflower, grapeseed, or light olive oil
• 1 tsp vanilla extract
• 1 tsp apple cider vinegar helps activate the baking soda

Method

 

1. Heat the oven to 175 C / 350 F. Line a 9x5-inch loaf pan with parchment paper, leaving an overhang on the long sides so you can lift the cake out easily.
2. In a large mixing bowl, whisk together the buckwheat flour, baking powder, baking soda, cinnamon, and salt until combined.
3. Grate the apples on the large holes of a box grater directly into a separate bowl. Do not squeeze out the liquid.
4. Add the brown sugar, eggs, oil, vanilla extract, and apple cider vinegar to the grated apple. Whisk until the eggs are fully incorporated and the sugar has mostly dissolved.
5. Pour the wet mixture into the dry ingredients and fold gently with a spatula until no dry flour remains. Don't overmix - stop as soon as the batter is uniform.
6. Let the batter rest in the bowl for 5 minutes. It will thicken slightly as the buckwheat absorbs the liquid.
7. Pour the batter into the prepared loaf pan and smooth the top with the spatula.
8. Bake for 38 to 42 minutes, until a toothpick inserted into the center comes out with just a few moist crumbs. If the top is browning too fast after 30 minutes, loosely tent with foil.
9. Remove from the oven and cool in the pan for 10 minutes. Then lift the cake out using the parchment overhang and transfer to a wire rack. Cool for at least 20 more minutes before slicing.

Notes

For a crunchier top, sprinkle 1 tbsp of raw sugar or demerara sugar over the batter just before baking. It adds a slight caramel crust that contrasts nicely with the soft crumb.

Tips for Success

• Grate the apple directly into the batter bowl so none of the juices are lost.
• Let the batter rest 5 minutes after mixing so the buckwheat can absorb the wet ingredients fully.
• Test doneness at 35 minutes by pressing the center – it should spring back, not sink.
• Line the loaf pan with parchment, leaving an overhang on both sides, so the cake lifts out cleanly.
• Cool on a wire rack for at least 20 minutes before slicing or the crumb will tear.

Variations

• Add 60 g of chopped walnuts or pecans to the batter for crunch and extra richness.
• Fold in 1 tsp of vanilla extract and a handful of raisins for a more classic spiced loaf feel.
• Top sliced cake with a drizzle of honey and plain yogurt instead of frosting for a lighter finish.

Storage and Reheating

Store the cooled cake wrapped tightly in beeswax wrap or an airtight container at room temperature for up to 3 days. The texture actually improves on day two as the crumb settles.

For longer storage, refrigerate for up to 5 days. Bring slices back to room temperature before eating, or warm briefly in a 160 C / 320 F oven for 5 minutes.

This cake freezes well. Wrap individual slices in plastic wrap, then place in a zip-lock bag. Freeze for up to 2 months. Thaw at room temperature for 1 to 2 hours.

Serving Suggestions

A plain slice is enough most of the time. But if you want to dress it up, a spoonful of creme fraiche or thick Greek yogurt on the side cuts through the earthiness nicely.

For breakfast or brunch, serve with strong black coffee or a flat white. The bitter edge of the coffee plays well against the brown sugar sweetness.

If you’re serving it as dessert, warm the slice slightly and add a small scoop of vanilla ice cream or a drizzle of salted caramel sauce, much like the approach used in this rustic Alpine cherry bread bake. Thin apple slices fanned on top make it look put-together with minimal effort.

FAQ

Why did my buckwheat apple cake come out gummy in the middle?

The most common cause is underbaking or too much liquid from the apple. Make sure you’re pressing the cake center at the 35-minute mark – it should spring back firmly. If your apple was extra juicy, the bake time may stretch to 45 minutes.

Can I use almond flour instead of buckwheat flour in this cake?

Not as a straight swap. Almond flour is much higher in fat and lower in starch, so the structure and bake time both change significantly. Buckwheat flour is what gives this cake its characteristic texture and earthy flavor.

How do I know when the buckwheat apple cake is done baking?

Insert a toothpick into the center – it should come out with just a few moist crumbs, not wet batter. The top should also be set and the edges pulling slightly away from the pan walls.

Can I freeze buckwheat apple cake and how long does it keep?

Yes, it freezes well for up to 2 months. Slice it first, wrap each slice individually in plastic wrap, then store in a freezer bag. Thaw at room temperature for 1 to 2 hours before eating.

Is buckwheat apple cake gluten-free?

Buckwheat is naturally gluten-free despite the name, so this cake can be gluten-free if you use certified gluten-free buckwheat flour. Cross-contamination in manufacturing is common, so check the label if you’re baking for someone with celiac disease.

What’s the difference between buckwheat apple cake and a regular apple loaf?

A regular apple loaf uses all-purpose or whole wheat flour, which gives a lighter, more neutral crumb, closer to something like an elderflower lemon loaf. Buckwheat flour brings a nuttier, slightly bitter note and a darker color that makes this cake taste distinctly different – more complex and less sweet-forward.

Jesse

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