120g all-purpose flour
50g quick-cooking oats (not instant)
1 ½ teaspoons baking powder
¼ teaspoon baking soda
¼ teaspoons kosher salt
100g plus 15g granulated sugar
2 lemons
150g plain Greek yogurt
85g unsalted butter, melted
1 large egg
225g fresh or frozen blueberries
Step 1
Begin by preheating the oven to 175°C. Grease and flour an 8.5-inch springform cake pan and set it aside.
Step 2
In a bowl, combine the flour, oats, baking powder, baking soda, and salt. Set aside.
Step 3
In a separate bowl, mix 100g of sugar with the finely grated zest of 2 lemons. Rub the lemon zest into the sugar to release its flavor.
Step 4
To the lemony sugar, add the yogurt, melted butter, and egg. Squeeze in the juice of 1 lemon (approximately 1/2 a lemon). Whisk well to combine.
Step 5
Add the flour mixture to the wet mixture and fold together until just combined.
Step 6
Spoon half of the cake batter into the prepared pan, spreading it into an even layer, and scatter half of the blueberries on top.
Step 7
Add the remaining batter on top and spread it out to cover the blueberries. Scatter the remaining blueberries on top and press down gently to push them into the batter. Sprinkle with the remaining 15g of granulated sugar.
Step 8
Bake in the preheated oven for 40-50 minutes if using fresh blueberries, or 50-60 minutes if using frozen. The cake is done when it looks golden all over and a skewer inserted into the center comes out with a few moist crumbs stuck to it. Allow the cake to cool in the pan for 10 minutes before removing and serving.