01 -
Heat your oven to 200°C/400°F. Line a 20cm/8" pan with parchment, leaving extra hanging over the edges, and give it a quick spray or grease.
02 -
Combine the butter and brown sugar, then whisk in the egg. Mix in the flour, oats, baking powder, and a pinch of salt until blended.
03 -
Press half the mixture (1 1/2 cups) into your prepared pan. Spread the jam over it, then scatter the leftover mixture on top.
04 -
Pop it in the oven for 30-35 minutes until the top is a lovely, deep golden brown.
05 -
Let it cool completely for around 2 hours. Use the parchment to lift it out of the pan, then slice into 16 equal-sized squares.