Absolutely utterly delicious recipe.

Recipe notes:
I made 2.5 times the recipe and only got 30 biscuits, despite only making each biscuit with a large teaspoon. I found they needed to be flattened more than I thought at first - pressed down into a thick biscuit shape rather than giving them just a light press. My first few still look very thick and didn't spread much. :) I might have gotten up to 40 biscuits if I had flattened them down that much to begin with.

I used 3T of aquafaba in place of each egg white, which I think worked well. I reduced the sugar as recommended by other commenters and found them perfectly sweet enough even at 3/4c. This could possibly be reduced slightly. Making 2.5 times the recipe meant i used the rind of 2.5 oranges - - the biscuits are at the perfect amount of orange flavour for me at that amount.

Absolutely delicious ❤ and easy

Definitely agree with doing 3/4 cup sugar instead of 1 cup. Really really sweet with 1 cup caster sugar plus the icing sugar - kinda takes away the zingy citrus flavour you want from the orange. Otherwise delicious!

Easy to make….quite sweet…..nice and chewy….a real treat

Really yummy and all family have requested a repeat batch

Great recipe, easy and great effect with the roll in icing sugar - will try lemon next time and perhaps orange flower water occasionally too

Super yummy and well worth a whirl... I came across these at family members place and couldn’t believe such yummy biscuits could be gluten free... now a firm family favourite!

I made 2 batches today. Definitely only need 3/4 cup sugar as they are pretty sweet. Love the orangey flavour and oh so chewy! Perfect for a gluten free sweet treat. Very easy recipe.

Can I use mandarin or lemon. Which one is better?
CHELSEA: depends on your preference. Lemon would be more tangy. Let us know!

Exceeded expectations. So easy and so yummy. I knocked the sugar back to 3/4 cup as suggested by others, and as my orange tree is not fruiting, but my lemon tree is loaded, I swapped the orange rind for lemon rind and it was delicious (it's a Meyer lemon, which isn't as sour as other varieties).
Thanks for a fabulous recipe!

Lovely chewy biscuits. It's hard to stop at 1...

Probably the best cookie recipe I have ever made or tasted. (even raw!)

Turned out perfectly

Mmmm, delicious!

Very easy and everyone loved them. I added a tablespoon of orange flower water to boost orange flavour, which worked well.

Easy, yummy and light.
Love these biscuits and so does my whole family. I make these at least once a month. I add less sugar though as they are quite nice with just 3/4 of a cup.

Tastes like a macaroon
3/4 castor sugar is enough

Delicious

Love these ‘healthy’ biscuits. Moderation is important but very hard as they’re gorgeous.

Delicious! I didn't have an orange so substituted a lemon. I also halved the amount of sugar, and it was more than enough.

Lovely flavour and nice and chewy. Great with berries and cream

Quick, easy and delicious

Gorgeous flavour, rolling in icing sugar gives a shiny crackly crust with a bit of crunch. Mine came out a little undercooked in the centre, I'll flatten them more next time. A great recipe for a wheat free, dairy free diet.

I have made these biscuits so many times now and they are always a hit with everyone. I couldn't count how many times I have given the recipe out. They are not just for gluten intolerant! Everybody loves them.

This is a great recipe, nice fresh flavour.

Made these for visitors with gluten intolerances - they were a hit! lovely orange flavour, chewy biscuits.....would definitely make again!

I have made these biscuits, i dunked half of the biscuit into melted chocolate just to top it off, not bad.