Light French Apple Cake

Ingredients

• 85g unsalted butter, softened
• 100g caster sugar, divided
• 3 large eggs, separated
• 110g Doves Farm Freee plain flour
• 25g cornflour
• 2 tsp baking powder
• ¼ tsp fine salt
• 2 tbsp milk or 2 tbsp yogurt
• 1 tsp vanilla extract
• 1 tbsp dark rum or Calvados (optional) - if not using add extra milk / yogurt
• 350–400g prepared apples, peeled, cored and thinly sliced
• 1 tbsp lemon juice
• 1 tbsp flaked almonds

Method

1. Heat the oven to 160°C fan. Line the base of a 9-inch / 23cm round tin with baking paper and lightly grease the sides.

2. Toss the sliced apples with the lemon juice and set aside.

3. In a bowl, whisk together the flour, cornflour, baking powder and salt.

4. In a large bowl, beat the butter with 85g of the sugar for 3–4 minutes until lighter and fluffy.

5. Beat in the egg yolks, one at a time. Beat in the vanilla, rum or Calvados if using, and the milk or goat yogurt.

6. Fold in the dry ingredients until just combined.

7. In a clean bowl, whisk the egg whites to soft peaks. Gradually add the remaining 25g sugar and whisk to soft-medium glossy peaks.

8. Fold one-third of the egg whites into the batter to loosen it, then gently fold in the rest.

9. Fold in the apples through the mixture. Spoon the batter into the tin and level lightly. Optional - arrange some apple slices on top.

10. Sprinkle flaked almonds on top

11. Bake for 50 minutes, checking from 40 minutes. The cake should be golden, springy, and set, with no wet batter on a skewer.

12. Leave in the tin for 15 minutes, then turn out and cool fully.

Notes

• Use a tart eating apple (Bramley, Cox's, Braeburn) — too-sweet apples make the cake one-note.
• Goat yogurt > cow milk if dairy is an issue and you want extra tenderness.
• The 1 tbsp flaked almonds on top adds crunch + a tiny extra protein layer that helps the cake hold its top during baking.

How this works (the science)

A French-style apple cake is essentially a thin batter holding a lot of fruit in suspension. The apples (350-400g into a 9-inch tin) are ~50% of the cake by weight, so the batter is doing minimum structural work — which makes it perfect for low-sugar, low-fat, gluten-free baking.

• Gluten replaced by Doves Farm Freee plain flour + cornflour (110g + 25g). Total flour is low because the apples are providing the bulk. The cornflour lightens the GF blend further and helps absorb moisture released by the apples during baking — without it, the cake centre would stay wet.
• Sugar at 100g (split 85g / 25g) is low for a fruit cake. The apples contribute their own fructose + the lemon juice toss prevents browning AND amplifies the apple flavour by acidifying the surface. Your palate reads bright fruit as sweet, so you need less added sugar.
• Butter at 85g is moderate — not high, not low. Butter coats the GF starches so they don't go cardboardy, and creams with sugar to incorporate air. Less and the cake would be dry; more and the apples would sink to the bottom.
• 3 eggs separated does double work. Yolks emulsify the butter into the batter (preventing the dense, greasy texture you get from creaming butter with GF flour without proper emulsification). Whites whipped to soft-medium peaks add lift, compensating for the missing gluten and the low chemical leavener.
• 2 tsp baking powder is high for a 110g flour cake — gives extra chemical lift to compensate for the heavy fruit load and the missing gluten structure.
• Lemon juice on the apples is doing three jobs: (1) preventing oxidation/browning, (2) brightening the apple flavour so you need less sugar, (3) tiny acid hit that helps the baking powder activate.
• Goat yogurt vs cow milk — yogurt's acid further activates the baking powder and tenderises the GF flour by weakening any cohesive bonds. Goat is gentler on dairy-sensitive guts. If you skip the rum/Calvados, replace with extra yogurt rather than milk for the same acid effect.
• Long, low bake (50 min at 160°C fan) — high heat would brown the surface before the apple-heavy centre cooks through. Slow heat lets moisture evaporate gradually and the cake set evenly.
• Rum or Calvados (1 tbsp) adds depth without adding sugar. The alcohol mostly bakes off, leaving aromatic compounds that make the apple flavour read as more complex.

Variations

More photos