Prepare a 9x9 inch square tin with non stick baking paper.
In a large bowl mix together your melted butter with your sugars. Mix until all combined.
Add in your eggs and almond essence, mix until combined.
Add in your gluten free flour, cornflour and xanthan gum. Mix until just combined and the mixture is nice and smooth.
Pour the mixture into your tin.
Spoon dollops of your jam on top and swirl it through using a butter knife.
Sprinkle the flaked almond over the top.
Bake in the oven for around 30 minutes. The very center will still be a little wobbly but the outer edges should be just cooked through. The trick to blondies is to take them out when they look just under done. Remember they still cook and firm up as they cool in the tin.
Remove from the oven and allow to completely cool in the tin.
Once cooled, slice into 9 slices.
Recipe by at https://laurasglutenfreekitchen.com/2021/02/gluten-free-bakewell-blondies/