Last reviewed October 18, 2026
To make weed cookies, you first infuse butter with decarbed cannabis, then use that cannabutter in place of regular butter in a cookie recipe. The two steps that matter most are decarbing the flower so the THC is active, and mixing the dough thoroughly so each cookie gets a similar dose.
Before you start: homemade edibles are hard to dose precisely. Health Canada suggests starting with 2.5 mg of THC or less. Eaten cannabis can take 30 minutes to 2 hours to begin working and up to 4 hours to reach full effect. Label your cookies, and store them where children and pets can’t reach them.
Step 1: make the cannabutter
- Decarb your flower in the oven at about 115 °C (240 °F) for 30 to 45 minutes. See How to decarb weed.
- Melt 1 cup (225 g) of butter with 1 cup of water in a saucepan over low heat. The water keeps the butter from scorching.
- Stir in the decarbed flower and keep it at a gentle simmer, never boiling, for 2 to 3 hours. Stir now and then.
- Strain through cheesecloth into a container. Don’t squeeze hard, or it will taste grassy.
- Chill until the butter sets on top, then pour off the water underneath.
More detail, strength tables and storage tips are in How to make cannabutter.
Step 2: bake the cookies
Makes about 24 cookies.
- ½ cup (115 g) cannabutter, softened
- ½ cup (115 g) regular butter, softened
- ¾ cup brown sugar and ½ cup white sugar
- 2 eggs and 1 tsp vanilla
- 2¼ cups flour, 1 tsp baking soda and ½ tsp salt
- 1½ cups chocolate chips
- Heat the oven to 175 °C (350 °F). This is fine for baking: the inside of a cookie stays well below oven temperature.
- Cream both butters with the sugars, then beat in the eggs and vanilla.
- Mix in the dry ingredients, then the chips. Mix thoroughly, since unevenly mixed dough gives uneven doses.
- Scoop equal portions, about 2 tablespoons each, onto a lined tray.
- Bake 9 to 11 minutes, until the edges are golden.
Working out the dose
You can estimate the most THC a batch could contain:
- Grams of flower × THC % × 1,000 = mg of THCA. For example, 3.5 g at 20% is 700 mg.
- About 87.7% of THCA becomes THC once decarbed, so roughly 614 mg in the whole cup of cannabutter.
- This recipe uses half a cup, so about 307 mg goes into the dough.
- Divide by the number of cookies: at most about 13 mg each across 24 cookies.
- Some THC is always lost in infusion, so the real amount is lower.
That’s an upper limit, not a promise. Try a quarter of a cookie first, and wait at least 2 hours.
Common questions
How long does a weed cookie take to kick in?
Usually 30 minutes to 2 hours, with the full effect at up to 4 hours. Don’t eat more in the meantime.
Does baking destroy THC?
Not at normal baking times. The inside of the cookie stays far cooler than the oven setting.
Can I use oil instead of butter?
Yes. Infused coconut or vegetable oil works in many recipes. See How to make cannabis oil.
How should I store weed cookies?
In a sealed, clearly labelled container, away from children and pets, for a few days at room temperature or longer in the freezer.
Source: Health Canada, Cannabis: lower your risks.
