Weed brownies are the classic cannabis edible — fudgy, chocolatey, and infused with cannabutter. Done right, they're one of the most enjoyable ways to consume cannabis. This step-by-step brownie guide covers everything: cannabutter prep, the perfect brownie recipe, exact brownie dosage guide calculations, and how to avoid the most common mistakes.
What You Need
For the Cannabutter
- 5–10g dried cannabis flower (or 15–20g trim/shake)
- 1 cup (225g) unsalted butter 1 cup water
Brownie Batter (16 brownies)
- ½ cup (115g) cannabutter, room temperature
- 1 cup (200g) granulated sugar
- 2 large eggs 1 tsp vanilla extract
- ⅓ cup (35g) unsweetened cocoa powder
- ½ cup (65g) all-purpose flour
- ¼ tsp each: salt, baking powder
- Optional: ½ cup chocolate chips
Step 1: Decarboxylate Your Cannabis
The step most beginners skip — and why their brownies don't work. Raw cannabis contains inactive THCA, not THC.
- Preheat oven to 230°F / 110°C (convection preferred)
- Break cannabis into pea-sized pieces on parchment-lined baking sheet
- Bake 40–45 minutes, turning once halfway. Done when golden-brown and herbal-smelling.
- Cool completely before proceeding
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Step 2: Make Cannabutter
- Melt butter in pot over very low heat. Add water.
- Add decarboxylate your cannabised cannabis, stir to combine
- Maintain 160–180°F / 70–80°C — do NOT boil
- Simmer 2–3 hours, stirring every 30 min
- Strain through cheesecloth. Squeeze out every drop.
- Refrigerate until solid. Pour off water layer.
Step 3: Make the Brownies
- Preheat oven to 325°F / 165°C. Line 8×8 inch pan with parchment.
- Melt cannabutter. Whisk in sugar.
- Beat in eggs one at a time, then vanilla.
- Sift in cocoa, flour, salt, baking powder. Fold gently — don't overmix.
- Fold in chocolate chips if using.
- Pour into pan. Bake 25–30 minutes until toothpick 1 inch from edge has moist crumbs.
- Cool completely before cutting.
Dosage Calculation
Example: 7g at 18% THC, 16 brownies
- 7 × 1,000 × 0.18 = 1,260mg THCA
- After decarb (90%): ~1,134mg THC
- After infusion (65%): ~737mg in butter
- Recipe uses ½ of butter: ~369mg in brownies
- Per brownie: ~23mg THC
| THC per Brownie | Beginner Effect | Experienced Effect |
|---|---|---|
| 2–5mg | Mild relaxation | Barely noticeable |
| 5–10mg | Clear effects | Gentle relaxation |
| 10–20mg | Too strong for beginners | Good recreational dose |
| 20–50mg | Overwhelming | Strong recreational dose |
Golden rule: Start with ¼–½ brownie. Wait how long edibles last before eating more.
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Dosing Tips
- Use a kitchen scale — weigh brownies to ensure equal portions
- Score the pan into 16 squares before baking as a cutting guide
- Mix thoroughly — cannabutter must be fully incorporated
- Label clearly and store separately from regular brownies
Variations
- Fudgier: Replace ¼ cup flour with extra cocoa add 2 tbsp melted dark chocolate
- Vegan: Cannabis coconut oil instead of cannabutter flax eggs
- Low-dose: Halve the cannabis, make 24 pieces — aim for 5mg THC each
Storage
Airtight at room temperature: 4–5 days | Refrigerator: 2 weeks | Freezer: 3 months. Label with cannabis content and keep away from children.
Troubleshooting
Don't work: Did you decarb properly? 230°F for 40–45 min?
Too strong: Use less cannabis next time, cut smaller squares.
Cannabis taste: More cocoa and chocolate chips masks herbal flavor effectively.
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Frequently Asked Questions
Decarboxylation is the process of heating cannabis in an oven to activate the THC and CBD compounds, making them bioavailable for consumption. Without decarboxylation, your brownies won't produce the desired effects because the cannabinoids won't be properly activated.
Decarboxylation is the process of heating cannabis in an oven to activate the THC and CBD compounds, making them bioavailable for consumption. Without decarboxylation, your brownies won't produce the desired effects because the cannabinoids won't be in their active form.
To calculate dosage, multiply the weight of cannabis used by its THC percentage, then divide by the number of brownies. For example, 7 grams of 20% THC cannabis (140mg THC total) divided into 12 brownies equals approximately 11.7mg THC per brownie. Always label your edibles clearly with the dosage.
To calculate dosage, multiply the weight of cannabis used (in grams) by its THC percentage, then divide by the number of brownies produced. For example, 10 grams of 20% THC cannabis contains 200mg of THC total, so dividing by 20 brownies equals 10mg per brownie.
No, regular butter won't infuse the cannabis into your brownies—you need to make cannabutter first by slowly heating decarboxylated cannabis with butter to extract the cannabinoids. Using regular butter would result in brownies with no cannabis effects.
No, regular butter won't contain any cannabis compounds. You need to infuse butter with decarboxylated cannabis (cannabutter) to create brownies with the desired effects; regular butter won't work as a substitute.
Properly stored weed brownies last 3-5 days at room temperature in an airtight container, or up to 2 weeks in the refrigerator. For longer storage, keep them in the freezer for up to 3 months.
Cannabis edibles typically take 30 minutes to 2 hours to take effect, depending on metabolism and whether consumed with food, and the effects generally last 4-8 hours. Effects onset times can vary significantly between individuals, so start with a low dose and wait at least 2 hours before consuming more.
Inconsistent potency usually results from uneven distribution of cannabutter throughout the batter or variations in mixing. To ensure consistency, thoroughly blend your cannabutter into the batter and divide the mixture equally among brownie portions.
Store your weed brownies in an airtight container in a cool, dark place or refrigerator for up to one week, or freeze them for up to three months. Always keep them clearly labeled and stored in a secure location away from children and pets.
Written by
The Green Treasure Editorial Team
Independent cannabis journalism backed by science. We cover terpenes, vaporizers, edibles, growing and health.
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