Berry baking: a slice, a cake and a crumble that take any berry

Most berry recipes name one berry. That is not how a self-pick day works: you come home with a mixed bucket, one crop dominant and the rest whatever else was picking. These three are written to take any of it, in any proportion, fresh or frozen.

The two rules

Toss berries in flour before folding them in. A spoonful from the recipe’s own flour, shaken through the fruit in a bowl. Coated berries hold in the batter instead of sinking to the bottom.

Use berries frozen, never thawed. Thawed berries release all their juice into the batter, which turns it grey and stops it setting. Straight from the freezer they bake through with no extra time worth worrying about.

Berry slice

Ingredients: Base and topping from one mixture: 250 g flour, 150 g rolled oats, 180 g cold butter, 120 g brown sugar, 1 tsp baking powder. Filling: 500 g berries, 3 tbsp sugar, 1 tbsp cornflour, a squeeze of lemon.

Method: Rub the butter into the dry ingredients until it clumps. Press two thirds firmly into a lined tin. Toss the berries with the sugar, cornflour and lemon and spread over. Scatter the remaining crumb loosely on top. Bake at 180C for 40 minutes until golden and bubbling at the corners. Cool completely in the tin before cutting, which is the hard part.

Berry yoghurt cake

Ingredients: 200 g flour, 2 tsp baking powder, 150 g sugar, 2 eggs, 150 g Greek yoghurt, 100 ml oil, zest of a lemon, 250 g berries.

Method: Whisk the eggs and sugar, beat in the yoghurt, oil and zest, then fold in the flour and baking powder. Fold through most of the berries, floured, and scatter the rest on top. Bake at 175C for 45 to 50 minutes. The yoghurt is what keeps it moist for three days, which a butter sponge will not do.

The crumble, as proportions rather than a recipe

Crumble does not need a recipe, it needs a ratio: two parts flour to one part sugar to one part butter, by weight, with a handful of oats or chopped nuts if you want texture.

For the fruit, allow a tablespoon of cornflour per 500 g of berries and rather less sugar than you think. Berries flood, and the cornflour is what turns the flood into sauce. Apple bulks it out and stops the whole dish going to liquid, which matters most with boysenberries and raspberries.

Bake at 180C until the juices come up dark around the edge, 35 to 45 minutes.

Updated 10 September 2026