Blueberry Butter (Easy Crockpot Recipe)

Spoon lifting a thick, glossy scoop of homemade Blueberry Butter above a clip-top glass jar, showcasing the rich texture of the slow cooker fruit spread with fresh blueberries and filled jars in the background.

This blueberry butter turns fresh berries into a thick, spiced spread with almost no hands-on effort. The slow cooker does the work, breaking the blueberries down and concentrating their flavor over several hours, so you end up with a rich, spoonable butter that's ready for toast, biscuits, or a spoonful stirred into yogurt.

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Table of Contents

Tips for the Best Blueberry Butter
Ingredients For Blueberry Butter
How to Make Blueberry Butter
Storing Blueberry Butter
Blueberry Butter FAQ
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In This Post

Blueberry butter is a spiced, slow-cooked spread that turns fresh blueberries into a thick, spoonable butter with almost no work on your part. Everything goes into the Crockpot at once. The berries break down into a rich purple puree, and a long, low simmer does the rest. The slow cook concentrates the flavor into something deep and jammy without any fussy canning steps. It's the kind of recipe you start in the morning and forget about until your kitchen smells like warm cinnamon and berries in the afternoon.

Jars of homemade Blueberry Butter served with fresh blueberries and biscuits, with dark blueberry spread on split biscuits.

This blueberry butter takes about 8 to 10 hours in the slow cooker and yields roughly 3 cups. Everything goes into the pot at once, cooks on low for a couple of hours until the berries soften, gets blended right in the slow cooker, then simmers uncovered a while longer to thicken into a rich, spreadable butter.

Tips for the Best Blueberry Butter

Once the blueberry butter has been simmering a while, stir it every hour or so to keep it from catching on the bottom of the crockpot as it thickens.

To check if it's ready, spoon a little onto a chilled plate and pop it in the freezer for a couple of minutes. If it holds its shape when you run a finger through it, it's done.

This slow cooker blueberry butter will thicken even more as it cools.

Ingredients For Blueberry Butter

Ingredient collage for homemade Blueberry Butter showing fresh blueberries, lemons, sugar, a cinnamon stick, whole nutmeg with grater, and text listing: "2 lb Blueberries," "Lemon," "1 ½ cups Sugar," "1 cinnamon Stick," and "½ tsp Nutmeg."

To make blueberry butter in the slow cooker, you'll need:

2 pounds fresh or frozen blueberries, rinsed
\1½ cups granulated sugar Z
est and juice of 1 medium lemon
1 cinnamon stick, or 1 teaspoon ground cinnamon
½ teaspoon freshly grated nutmeg

How to Make Blueberry Butter

Making blueberry butter is mostly a matter of letting the slow cooker do its thing.

FIRST STEP: Add the blueberries, sugar, lemon zest, lemon juice, cinnamon, and nutmeg to a 6-quart slow cooker.

Ingredients for homemade Blueberry Butter layered in a slow cooker, including fresh blueberries, granulated sugar, lemon zest and juice, a cinnamon stick, and ground nutmeg before cooking.

SECOND STEP: Cover and cook on LOW for 2 to 3 hours, until the blueberries have softened.

THIRD STEP: Blend the mixture right in the slow cooker with an immersion blender to. your desired consistency. You can leave plenty of chunks or blend until smooth and cohesive.

If you're using a cinnamon stick, pull it out before blending and drop it back in once you're done.

No immersion blender? A food processor or blender works too; just return the mixture to the slow cooker afterward.

Cooked blueberries in the slow cooker being blended with an immersion blender to create a smooth, rich Blueberry Butter with a thick fruit spread consistency. — Blend just until the blueberries are broken down into a puree. The mixture will have chunks of blueberry it in.

FOURTH STEP: Prop the lid open slightly so steam can escape, then keep cooking on LOW for another 6 to 8 hours.

FIFTH STEP: Stir every hour or so as it thickens.

SIXTH STEP: The blueberry butter is done once it's thick and holds its shape.

SEVENTH STEP: Discard the cinnamon stick, then spoon the hot blueberry butter into sterile canning jars and seal with lids. Let the jars cool to room temperature; the butter will continue to thicken as it cools.

Thick Blueberry Butter reducing in a slow cooker after blending, showing the deep purple fruit mixture cooked down to a rich, glossy, spreadable consistency before transferring to jars.

EIGHTH STEP: Store the sealed jars in the refrigerator or freezer.

Spoon spreading thick homemade Blueberry Butter onto a warm split biscuit with fresh blueberries and a jar of blueberry butter in the background.

How To Serve Blueberry Butter

Blueberry butter is at its best spread thick and simple. Slather it over warm biscuits or toast, spoon it onto pancakes or over French toast roll ups in place of syrup, or swirl it over a cheese danish. It also works as a simple filling for cakes and pastries if you want a fresh fruit layer without making a jam from scratch.

More Recipes That Use Blueberries ⭐ Lemon Blueberry Cheesecake Recipe | Blueberry Hand Pies | Blueberry Pie

Close-up overhead view of rich homemade Blueberry Butter with visible blueberry pieces in a measuring cup, highlighting its thick, glossy texture.

Storing Blueberry Butter

Once the blueberry butter has cooled to room temperature, transfer it to jars and seal for storage. It keeps well in the refrigerator for up to 3 weeks, so it's easy to have on hand for weeks of breakfasts.

For longer storage, the freezer works beautifully too. This blueberry butter will hold its flavor and texture for up to a year.

Blueberry Butter FAQ

Can I use frozen blueberries?

Yes. This recipe works with fresh or frozen blueberries, so it's easy to make even when fresh berries aren't in season. Keep in mind, frozen berries might release more moisture, so you may have to cook it with the lid off for a little longer.

Does this need to be processed in a water bath?

No. As long as the jars are stored in the refrigerator or freezer, water bath processing isn't necessary. This recipe is meant for short-term storage rather than shelf-stable canning.

Can I double this recipe?

This recipe scales up easily in a 6-quart slow cooker, so it's worth doubling if you go through blueberry butter quickly or want extra jars to give away. Simply double every ingredient, and the crockpot will still have plenty of room since the mixture reduces significantly as it cooks.

The one thing to watch for is time: with more volume to cook down, the vented stage will likely need to run longer than the original 6 to 8 hours, so plan on checking the consistency a bit later than usual.