This lemon slice has a chewy coconut and weetbix base which goes so well with the delicious lemon icing. A favourite in school lunchboxes and with a cuppa.
My most popular recipe ever is Chocolate Weetbix Slice, it has had close to 3 million video views on Facebook. So I thought it was about time that I tried out some other variations on this Kiwi classic. I was so happy with the way this Lemon Weetbix Slice turned out, I am sure I will be making it over and over again in the future. For more great ideas on baking with Weetbix, check out my collection of The Best Weetbix Recipes.
The lemon zest gives the icing a nice tartness which balances so well with the sweet chewy coconut base. If you like a more crunchy base then bake it for a little longer, remember all ovens are different so it might take a few times for you to get it to the perfect texture. If you are looking for more ideas with Weetbix be sure to try my Weetbix chocolate chip cookies , Dark chocolate, date and Weetbix bliss balls and Nana's Date Loaf.
How to make this easy lemon slice:
Preheat oven to fanbake 180°C. Melt butter in a large microwave proof bowl, add sugar and stir together. Crush in weetbix, add flour, coconut and baking powder. Mix together. Pour into a lined tray and press down firmly.
Bake for 15 - 20 mins, until it is cooked through but soft to touch. It will firm up as it cools. Mix together icing sugar, butter, lemon juice and zest. Add boiling water if needed to loosen mixture and whisk out any lumps.
Ice the slice while it is still warm then chop up once cooled and icing has set. Store in an airtight container in the fridge or in a cool dry place.
Recipe FAQs:
My slice tin is approximately 29 x 19cm. Anything close to this will work. The smaller your tin, the thicker your base will be and the longer it might take to cook.
Yes. If you overcook Lemon Weetbix slice it can go quite hard. I recommend baking this for 14-20 minutes however, all ovens are different. If you know your oven 'runs hot' test it at the 15 minute mark. It should be soft when you bring it out of the oven and it will firm up as it cool down.
Yes just swap for 1 extra Weetbix biscuit and ½ a cup of flour.
You can try adding dried apricots or cranberries to the base.
★★★★★
"I've always made chocolate weetbix slice but not anymore, this lemon weetbix slice is next level, I added dried apricots to the base too and it's YUMMY!"
Sarah - VJ Cooks reader
Storage:
Lemon weetbix slice can be store in an airtight container in the pantry for up to one week.
This slice can also be frozen. Wrap well with cling wrap, baking paper or tin foil and freeze in an airtight container.
Top tips:
This slice can also be made gluten free. Simply use gluten free weetbix and one cup of gluten free flour or almond meal.
Related Recipes:
Made this recipe?
Please click on the stars below to rate it or, write a review!
Lemon weetbix slice
This super easy baked slice is topped with a delicious lemon icing.
Ingredients
BASE
- 185 grams butter, melted (6.5oz)
- 1 cup of sugar
- 3 Weetbix, crushed
- 1 cup of plain flour
- 1 cup of coconut
- 1 teaspoon of baking powder
ICING
- 2 cups of icing sugar
- 1 lemon zest and juice (60ml)
- 50 grams of butter, melted (1.7oz)
Instructions
- Preheat oven to fanbake 180°C.
- Melt butter in a large microwave proof bowl, add sugar and stir together.
- Crush in weetbix, add flour, coconut and baking powder. Mix together.
- Pour into a lined tray and press down firmly.
- Bake for 15 - 20 mins. Until it is cooked through but soft to touch. It will firm up as it cools.
- Icing: Mix together icing sugar, butter, lemon juice and zest. Add boiling water if needed to loosen mixture and whisk out any lumps.
- Ice the slice while it is still warm then chop up once cooled and icing has set.
- Store in an airtight container in the fridge or in a cool dry place.
Notes
- Passionfruit version: swap the lemon in the icing for the pulp of 3 passionfruit.
Nutrition Information:
Yield: 24 Serving Size: 1Amount Per Serving: Calories: 185Total Fat: 9gSaturated Fat: 6gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 21mgSodium: 105mgCarbohydrates: 26gFiber: 1gSugar: 20gProtein: 1g
Nutritional values are approximate. Please use your own calculations if you require a special diet.
Thank you for checking out this recipe. I hope you enjoy making and eating it! If you have any questions, queries or feedback, please feel free to leave a comment below.
If you don't already follow me, head over to my Instagram, Facebook or TikTok pages to keep up to date with all my new recipes.
Vanya
Ann Shirley says
I can’t wait to try this recipe looks so good
Sarah says
I've always made chocolate weetbix slice but not anymore, this lemon weetbix slice is next level, I added dried apricots to the base too and it's YUMMY!
VJ cooks says
Oh wow that sounds delicious!
Mark says
Do you use salted or unsalted butter?
VJ cooks says
Hi Mark, I always use salted in my baking - I like the flavour it adds! But my recipes are forgiving, unsalted would also work if that was your preference.
Patricia says
I only used 1/2 cup of sugar, and added 1/2 of oats and a tablespoon of chia seeds. I also only used 1 cup of icing sugar. I still find it very sweet, but my kid loves it.
Michelle says
This is so good. I didn’t have coconut. So used a cup of oats and it was great 🙂
VJ cooks says
That's good to know. Thank you for the feedback Michelle!
Nessa says
I made this tonight, normally make the chocolate one. But felt like something lemony.
The slice itself is great. But ill need to modify the icing, its way to sweet & over throws the lemon taste. I didnt leave the base to cool enough before putting the icing on & it made it a complete mess.
Base is great, icing needs work as the icing was to much. (Great amount of lemon though)
Jenni says
It is possible to substitute chopped dates to sweeten instead of sugar?
VJ cooks says
I haven't tried that sorry but if you try it, let me know how it goes!
Jasmine says
Did you try this? Sounds like a great substitute!
Lara says
I have made this using the left over Wheet Bix Bites berry flavour with the lemon icing instead of plain Wheet Bix for a change and it's delicious!
Vanya Insull says
Oh yum! Yes, that would be delicious, love it. 🙂 Thanks for sharing.
Carlie says
I save up our weetbix crumbs for recipes like these. Could you please tell me what 3 crushed weetbix in cups is?
VJ cooks says
I haven't measured it in cups before sorry! It's about 50g.
Brigitte says
2 weetbix is 33g so 3 would be approximately 48g
Nova says
That’s a lot of butter!! I normally wouldn’t use that much butter in a slice I might cut that down to about 130gm and see if that works
Pauline says
Baked this today, super easy. It’s now setting in the fridge, ant wait to try it.
Next week could be the chocolate slice.
Thank you for the recipes.
VJ cooks says
That's awesome. Thanks for your words and happy baking 🙂
Chantale Rissik says
Is it possible to replace the Weetabix with crushed cornflakes as can be done in the chocolate version? Struggling to find weetabix.
Can’t wait to try the lemon version. Xx
VJ cooks says
Yes that should be fine 🙂
Heather says
Can you sub margarine for the butter?
VJ cooks says
I haven't tried it, but I'm sure it will work.
Amy says
Hi VJ, could I reduce the sugar in the base do you think? Trying to make a slightly healthier version for lunchboxes! Thank you!
VJ cooks says
Go for it.