Cannabis Lemon Slice

Classic Australian lemon slice with a cannabis twist — tangy, sweet, and perfectly dosed

Cannabis Lemon Slice. Approximately ~17.5mg THC per square at full strength. 60 min total, 16 squares yield.


25 minPrep
35 minCook
60 minTotal
16 squaresYield
EasyDifficulty

Nothing says Australian home baking quite like a good lemon slice. This beloved treat — with its buttery biscuit base, tangy lemon curd filling, and coconut topping — has been gracing CWA cake stalls and family kitchen tables for generations. Our cannabis-infused version maintains all the nostalgic charm while adding a gentle therapeutic twist.

Made with cannabutter in both the base and filling, each square delivers approximately 17.5mg THC when using standard-strength cannabutter. Start with half a square if you’re new to edibles, or calculate your exact dose with our free Edibles Dosage Calculator.


THC Per Serving

~17.5mg
Full Strength per square
~8.8mg
Half Strength per square
~4.4mg
Microdose per square

Cannabis Lemon Slice

🌿Cannabis Base

This recipe uses the cannabis-infused ingredient below. Tap for our step-by-step preparation guide.

🍪 Biscuit Base

  • 200g plain flour
  • 55g caster sugar
  • 1 pinch salt

🍋 Lemon Filling

  • 4 large eggs
  • 220g caster sugar
  • 125ml fresh lemon juice (about 3 lemons)
  • 2 tbsp lemon zest
  • 2 tbsp plain flour

🥥 Coconut Topping

  • 90g desiccated coconut
  • 55g caster sugar
  • 1 egg white, lightly beaten

Digital Kitchen Scale (0.01g) Precision scale for accurate cannabis and ingredient measurements — essential for consistent dosing. View on Amazon →
ONGROK Small Butter Infuser Compact all-in-one butter and oil infuser — 230V AU compatible, Amazon's Choice. Simple one-button infusion for cannabutter and oils. $174 View on Amazon →
Herb Guard UV Glass Stash Jar (500ml) Smell-proof UV glass jar — blocks light degradation and locks in freshness for months. View on Amazon →

Preheat oven to 180°C and line a 20x30cm lamington tin with baking paper, leaving overhang for easy removal.

Make the base by rubbing 100g cannabutter into flour, sugar, and salt until mixture resembles breadcrumbs. Press firmly into prepared tin.

Pro tip: Use the back of a spoon to create an even, compact base that won’t crumble when sliced.

Bake base for 15 minutes until lightly golden. Remove and reduce oven to 160°C.

Prepare filling by whisking eggs and sugar until pale. Add lemon juice, zest, flour, and remaining 25g melted cannabutter. Mix until smooth.

Pour lemon mixture over warm base and bake for 15 minutes. Meanwhile, combine coconut, sugar, and egg white for topping. Candy Thermometer make this step much easier.

Add coconut topping and dot with regular butter pieces. Bake another 5-8 minutes until coconut is golden.

Pro tip: Watch the coconut carefully in the final minutes — it can go from golden to burnt very quickly.

Cool completely in tin before lifting out using paper overhang. Cut into 16 squares with a sharp knife, wiping blade between cuts. Store in ONGROK UV Glass Storage Jars (2-pack, Child-Resistant) or airtight container.

Pro tip: Chilling for 30 minutes makes cutting cleaner and prevents the filling from oozing.

Half-Strength Option

Mix 60g cannabutter with 65g regular butter for gentler 8.8mg squares — perfect for beginners or daytime treats.

Lemon Juice Fresh

Always use fresh lemon juice, not bottled. Fresh juice has better flavour and the natural acidity helps balance the cannabis earthiness.

Even Dosing

Weigh your cannabutter for accuracy, and cut squares as evenly as possible to ensure consistent dosing across the batch.

Texture Perfect

The filling should be just set but still slightly wobbly when you remove it — it’ll firm up as it cools.

Storage Labels

Always label containers with “CANNABIS – 17.5mg per square” and the date made. Keep away from unsuspecting family members.

Zest Technique

Use a microplane to get fine zest that distributes evenly. Avoid the white pith, which adds bitterness.

Method Duration Notes
Room temperature 3-4 days Airtight container, cool spot
Refrigerated 1 week Best for maintaining texture
Frozen 2 months Wrap squares individually

Important Safety Information

  • Calculate your dose before cooking — use our free Edibles Dosage Calculator.
  • Start low, go slow. If this is your first time with edibles, eat half a square (~8.8mg) and wait at least 90 minutes before having more.
  • Onset time: 30-120 minutes. Do not eat additional servings within this window.
  • Duration: Effects can last 4-8 hours.
  • Do not drive or operate machinery after consuming cannabis edibles.
  • Store securely — label all containers with contents, date, and dosage. Keep away from children, pets, and unsuspecting housemates.
  • Legal context: Cannabis remains illegal for recreational use in most Australian states. Medicinal cannabis is available through TGA-approved prescriptions. Know your state’s laws.
  • Emergency: Australian Poisons Information Centre — 13 11 26 (24 hours)


Can I use half cannabutter and half regular butter?

Absolutely! Use 60g cannabutter mixed with 65g regular butter for gentler 8.8mg squares. This is perfect for beginners or when you want a milder effect. The texture and flavour remain identical.

How long does cannabis lemon slice take to kick in?

Effects typically begin 30-120 minutes after eating, depending on your metabolism, what you’ve eaten recently, and your cannabis tolerance. Peak effects usually occur 2-4 hours after consumption, so be patient and don’t take more too quickly.

Do I need to decarboxylate my cannabis first?

Yes, decarboxylation is essential before making cannabutter. Raw cannabis contains THCA, which isn’t psychoactive until heated. Your cannabutter should already be made from properly decarboxylated cannabis for this recipe to be effective.

How should I store cannabis lemon slice?

Store in an airtight container in the fridge for up to one week, or freeze individual squares for up to 2 months. Always label containers clearly with cannabis content and dosage information. Keep away from children and pets.

What if I accidentally eat too much?

If you’ve consumed too much, stay calm and find a comfortable, safe space. Drink water, try to rest, and remember that the effects are temporary. The Australian Poisons Information Centre (13 11 26) is available 24/7 for guidance. Effects typically fade within 6-8 hours.

Can I substitute cannabis coconut oil for cannabutter?

Yes, you can substitute cannabis coconut oil at a 1:1 ratio. The coconut flavour will complement the coconut topping nicely. Just ensure your cannabis oil has similar potency to maintain the intended dosage per square.


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