Ingredients
Method
- Preheat oven to 180°C / 160°C fan / Gas 4. Grease and line a 30x23cm traybake tin.
- Mix lemon juice and granulated sugar together in a jug. Set aside.
- Place butter, caster sugar, flour, xanthan gum (if using), baking powder, eggs, milk, lemon zest, and vanilla into a large bowl. Beat with electric whisk for 2–3 minutes until smooth and pale.
- Pour into prepared tin. Spread evenly to corners. Level the top.
- Bake for 30–35 minutes until golden and a skewer comes out clean. Check at 30 minutes — do not overbake.
- Immediately poke 20–30 holes over the warm cake with a skewer. Pour drizzle evenly over the entire surface. Leave to cool completely in the tin — at least 1 hour.
- Lift from tin. Cut into squares with a sharp knife.
Notes
Use a good quality gluten-free self-raising flour blend — Doves Farm Freee is recommended.
Check whether your flour contains xanthan gum before adding extra — most good blends already include it.
Apply the drizzle the moment the cake comes out — do not wait.
Use granulated sugar in the drizzle, not caster — it creates the crunchy crust.
Do not overbake — check at 30 minutes and pull out as soon as the skewer is clean.
Stores in an airtight container for up to 3 days. Freezes well for up to 3 months.
