How to Make Cannabutter in a Slow Cooker [Recipe]

April 11, 2025

Calling all cannabis enthusiasts and pastry lovers: Did you know you can easily infuse all your favorite baked goods with THC or CBD using a fresh batch of cannabutter? This versatile, easy-to-use edible is the secret ingredient behind classic THC confections like brownies, cookies, and muffins—plus, cannabutter is easy to make right at home! Below, we’ll walk you through how to make it, use it, and store it so you’re always ready to whip up some delicious, cannabis-infused creations.


Understanding Cannabutter Basics

Cannabutter is simply regular butter infused with cannabis, and it’s a key ingredient in many edibles. Butter’s high fat content allows it to absorb cannabinoids like THC and CBD effectively, making it the perfect carrier for those precious plant compounds.

The process of making your own cannabutter involves slowly heating a mixture of cannabis flower and butter over a low temperature, allowing the cannabinoids to bind to the fat without burning.1 A slow cooker is ideal for this because it maintains a steady, low heat for an extended period of time, ensuring a potent and smooth infusion.2


Block of butter with cannabis leaves in front of it

Making Slow Cooker Cannabutter

Another reason cannabutter is a game-changer? It’s incredibly easy to make at home and unlocks endless possibilities for crafting your own cannabis-infused treats. With just a little practice, you’ll be whipping up gourmet edibles like a pro. 

Ready to get started? Here’s everything you need to make your own slow cooker cannabutter:2


Ingredients

  • ½-1 ounce, or 14-28 grams of flower (the amount depends on your desired potency)
  • 2 cups (4 sticks) of unsalted butter
  • 1 cup of water


Tools & Equipment

  • Baking sheet
  • Parchment paperSlow cooker
  • Digital thermometer
  • Fine mesh strainer or cheesecloth
  • Airtight storage container




General slow cooker on a white background



Crockpot Cannabutter Recipe [5 Steps]

We’ve broken our recipe down into five simple steps Here’s how to make cannabutter:


Step 1: Prepare the Flower

Before adding your flower to the slow cooker, you’ll need to activate its psychoactive compounds through a process called decarboxylation. This involves heating your cannabis to transform the THCA within it into THC, the compound responsible for that “high” feeling. Here’s how you’ll do that: 

  • Preheat your oven to 245°F (118°C).
  • Line a baking sheet with parchment paper and spread your coarsely ground or broken-up flower evenly across the surface (you don’t want your plant material too fine—a coarser consistency helps prevent too much plant material from passing through during straining).
  • Bake for 30-40 minutes, stirring every 10-15 minutes to ensure even heating.
  • Once your cannabis turns a light golden-brown and gives off an earthy aroma, remove it from the oven and let it cool.


Step 2: Ready the Slow Cooker

While your cannabis is decarbing, you can get your butter and water ready in the slow cooker:

  • Set your slow cooker to low heat, around 200°F (or 93°C).
  • Add 2 cups of unsalted butter and 1 cup of water (the water helps prevent scorching).
  • Allow the butter to melt completely, stirring occasionally.
  • Use a thermometer to ensure the temperature stays below 200°F (93°C).

Step 3: Add Flower

Once your butter is fully melted, slowly add in your cannabis, stirring until it’s evenly distributed. Then cover the slow cooker with a lid and let the infusion process begin!

Step 4: Cook for 2-3 Hours

Now, it’s time to let your cannabutter develop its potency. Cook the mixture on low for 2-3 hours, stirring occasionally to prevent burning. But keep a close eye on the temperature (this is where your thermometer comes in handy)—your cannabutter should stay between 160-200°F the entire time.1 If the mixture starts boiling, reduce the heat to avoid burning away those potent cannabinoids.


Digital cooking thermometer on a white background


Step 5: Strain Plant Matter

Take your jar or other airtight storage container and put a fine mesh strainer or cheesecloth over the opening. Pour your cannabutter mixture through the strainer and into the container. Discard the leftover plant matter. As your cannabutter cools, you should start to see the water separate from the butter. Carefully dump the water out of your container.


Proper Cannabutter Storage

Store your cannabutter in an airtight glass container in the refrigerator for up to three weeks. For longer storage, freeze it for up to six months. Label the container clearly to avoid accidental consumption.3


Dosage and Potency Management

Cannabutter potency isn’t an exact science, but you can estimate it with some simple math. Let’s say you’re using the strain White Widow with a 20% THCA content to make your cannabutter. That means 1 gram of this strain contains 200mg of THCA (since 20% of 1,000mg = 200mg).

If you’ll be using 14 grams (or an eighth) of OG Kush, multiply 200mg by 14, which gives you 2,800. However, decarboxylation converts about 88% of THCA into THC, so multiply 2,800 by 0.88, resulting in 2,464mg of active THC.

Some THC is lost during the infusion process, with beginners typically retaining about 70% of the original amount. To account for this, multiply 2,464 by 0.7, which equals 1,725mg of THC in your final batch.4

Now you can dose your cannabutter accordingly—but remember, start low and go slow!

Even though you now have a rough idea of how potent your cannabutter will be, you may still want to sample a bit before you start baking with it. You can spread ½-¼ teaspoon on toast or a cracker and wait 90 minutes after ingesting to see the full effects of your batch.1 

If your batch is a little too potent for your liking, you can always mix it with regular, un-infused butter to dilute it. If it’s not potent enough, use a little more cannabis and a little less butter the next time you make cannabutter.1


Cannabutter FAQs

It’s cannabutter, not “can’t-a-butter,” but if you’re still feeling unsure, here’s more answers to boost your cooking confidence.


How long does homemade cannabutter last?
Refrigerated cannabutter lasts about three weeks, while frozen cannabutter can be stored for up to six months.3

What's the best cannabis strain for cannabutter?
Strains high in THC or CBD can work well in cannabutter, but it really depends on your desired effects and flavors. Popular choices include Purple Power, Skywalker, Blue Dream, White Widow, and OG Kush.5 You may want to choose strains with milder flavors and aromas to avoid overpowering your cannabutter and influencing the eventual taste of your baked goods.

Can I make cannabutter with less potent cannabis?
Yes, lower-potency cannabis flower can be a great choice for cannabutter. It will yield a milder cannabutter, which may be ideal for beginners or those seeking a gentler effect. You can also adjust the ratios of your cannabutter recipe, adding less cannabis and more butter to make the final result more mild.

Can I use salted butter?
While it is possible to use salted butter, unsalted butter is recommended as it provides better control over the flavor and consistency of your cannabutter.3

What temperature is ideal for infusion?
Ideally, keep your mixture between 160-200°F while cooking to preserve cannabinoids and terpenes and ensure proper infusion.1

How can I make my cannabutter more potent?
You can make your cannabutter more potent by using a higher-THC strain, increasing the cannabis-to-butter ratio, or extending the cooking time slightly while keeping the temperature controlled.

Can I use cannabutter in any recipe?
Yes! You can substitute cannabutter for regular butter in recipes like brownies, cookies, sauces, and more. You can even spread it on your favorite toast.


Get Cooking with Cannabutter

Now that you know how to make slow cooker cannabutter, you’re ready to elevate your cooking to the next level! Your budtender can recommend different strains to experiment with and recipes to try, so you can find your perfect infusion.

Find a Dispensary



Sources:

1. “How to make cannabutter for edibles with our easy recipe,” Leafly, November 13, 2024, https://www.leafly.com/learn/consume/edibles/how-to-make-cannabutter#how-to

 2. “How to Make Cannabis Butter, aka Cannabutter? [Recipe],” Way of Leaf, May 14, 2024, https://wayofleaf.com/cannabis/recipes/how-to-make-cannabis-butter-or-cannabutter/

3. “How to Make Cannabutter at Home,” Leafwell, October 7, 2024, https://leafwell.com/blog/how-to-make-cannabutter

4. “How to make cannabutter and properly dose it for homemade edibles,” Business Insider, April 20, 2022, https://www.businessinsider.com/guides/kitchen/how-to-make-cannabutter 

5. “10 Best Cannabis Strains for Edibles,” AllBud, January 4, 2023, https://www.allbud.com/learn/story/10-best-cannabis-strains-edibles




Please consume responsibly. This product may cause impairment and may be habit forming. There may be health risks associated with consumption of this product.  State laws impact what dispensaries can and can’t sell to recreational customers and medical marijuana patients. Not every type of product, consumption method, dosage form, or potency mentioned on this blog will be permitted in all locations. 


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