How To Freeze Fresh Blueberries

It’s easy to get carried away when you see beautiful flats of blueberries at the farmers market or take your family to the U-Pick farm. Once you get home, though, you might find that you have more fresh blueberries than you know what to do with. If you have any berries left after you've made Blueberry-Plum Pops, Blueberry Galette, or Blueberry-Citrus Rolls with Orange Glaze, it’s the perfect opportunity to freeze the blueberries for later.

Freezing blueberries is a great way to enjoy the taste of summer long after the bushes have stopped giving fruit. But you need to freeze them properly so they last and don't turn into a big clump in the bag. We’ll show you how to flash-freeze the blueberries to preserve them when they’re at their best, as well as what to do with frozen blueberries.

Should You Wash Blueberries Before Freezing?

You may have seen conflicting information about washing blueberries before freezing them; the truth is there are advantages to both methods.

If you decide to wash first, make sure the berries are thoroughly dried before freezing, or they could clump together and be more likely to get freezer burn. This is the best option if you won’t remember to wash berries after thawing them later.

If you choose not to wash your blueberries before freezing, you’ll be able to preserve the waxy “bloom,” which is a natural protective coating on the berry that protects it from insects and bacteria. By waiting to expose the berries to moisture and wash away the bloom, your frozen berries will be less likely to develop freezer burn. The downside is that you’ll need to remember to wash them before you use them later on. 

What You Need

• Colander and clean kitchen towels (if washing the berries)
• Rimmed baking sheets
• Parchment paper
• Zip-top silicone or plastic bags
• Permanent marker
  

How To Freeze Blueberries

1. Sort The Berries

Pick over the blueberries and remove any stems or moldy berries. If any of the berries are soft but not moldy, set those aside to use right away (our Blueberry Compote works well for these). Softer berries won’t freeze well.

2. Wash And Dry The Blueberries

If you’re washing the blueberries, rinse them well and spread out onto the clean kitchen towels to dry. Make sure the blueberries are thoroughly dried before moving on to the next step.

3. Freeze The Blueberries

Line your baking sheets with parchment paper and place the berries on there in a single layer. Make sure the berries have plenty of room on the baking sheet so they are less likely to clump together when they freeze. Blueberries will take anywhere from two to four hours to freeze solid; you can also leave them overnight and finish the process the next day.

4. Transfer The Berries For Storage

Label and date the zip-top bags you are using, and then fill with the berries. If you will be using them often for certain recipes (like blueberry muffins or pancakes), you can freeze in the amounts you regularly use. Try and get as much air as possible out of the bags before you place them back in the freezer. This will help prevent freezer burn.

Tips for Freezing Blueberries

To keep your frozen blueberries at their best, here are a few key tips:

1. Don't crowd them. When you’re placing them in the freezer, giving the blueberries a little room helps them freeze faster and will make them less likely to stick to one another.
2. Wash your hands. Especially if you’re washing the berries before you freeze them, make sure your hands are as clean as possible so the berries will be ready to safely use straight out of the freezer.
3. Make sure the berries are completely frozen before transferring to the bag. While it may be tempting to dump the berries into the bag to get some freezer space back, making sure the blueberries are frozen all the way through will help keep them from clumping together.

How To Use Frozen Blueberries

Most recipes can be made from fresh or frozen blueberries. Thawed blueberries won’t make for an attractive garnish on a cake, but they work well baked into treats or blended into drinks.

For smoothies: When using blueberries in a smoothie or Frozen Blueberry Lemonade, you won’t need to thaw the berries. Just toss them in the blender with the other drink ingredients.

For muffins, quick breads, or bread pudding: Blueberries won’t need to be thawed before using in these recipes, either. You may need to add a couple of minutes to the bake time to account for the frozen berries; be sure to test for doneness before taking them out of the oven.

For pie: If the pie filling is cooked before baking, you might not need to thaw the berries first. If the filling is not cooked before the pie is baked, thaw and drain the blueberries before using.