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Homemade Canned Berry-Rhubarb Pie Filling: A Taste of Summer All Year Round

My grandmother, bless her heart, had a pantry that was a wonderland of preserved delights. Jars of jewel-toned jams, pickles, and sauces lined the shelves, each one a little time capsule of the season it came from. But the ones I remember most vividly were the jars of pie filling, especially the berry-rhubarb. In the dead of winter, a slice of pie made with her canned filling tasted like pure sunshine, a potent reminder that even the longest winters eventually give way to the bounty of summer. It’s a tradition I’ve happily carried on, and this recipe brings that same joy to my own kitchen.

Recipe Overview

Prep Time: 30 minutes
Cook Time: 35 minutes
Total Time: 1 hour 5 minutes
Servings: Varies (Filling for 4-6 pies)
Yield: Approximately 6-8 pint jars
Dietary Type: Vegetarian, Gluten-Free (depending on pie crust)

Ingredients

3-4 cups blackberries or 3-4 cups huckleberries, washed
2 1/2 – 3 cups sugar (adjust to taste based on berry sweetness)
3 cups water
3-4 apples, peeled and half-sliced (such as Honeycrisp or Granny Smith)
2 tablespoons lemon juice
1 teaspoon salt
3-4 cups chopped frozen rhubarb or 3-4 cups chopped fresh rhubarb
2 tablespoons dry tapioca (instant)
1 tablespoon cornstarch
1/2 cup cold water

Equipment Needed

Large stockpot
Potato masher
Ziplock bag
Pint jars (6-8), washed
9×13 inch baking pan
Hot water bath canner
Canning rack
Jar lifter
Clean kitchen towels
Small saucepan (optional, for lids)
Lid wand (optional, for easier lid handling)

Instructions

Prepare the Berries: In a large stockpot, add the blackberries or huckleberries. Using a potato masher, gently mash the berries a few times to release their juices. This will help kickstart the cooking process and intensify the berry flavor.
Add Sugar and Water: Add the sugar and water to the stockpot. Turn the heat to low and stir continuously until the sugar is completely dissolved. This ensures a smooth texture in the final filling.
Prepare the Apples: Peel the apples and slice them into half-slices. Place the apple slices in a ziplock bag, then add the lemon juice and salt. Seal the bag and shake well to coat the apples evenly. This prevents the apples from browning and adds a touch of brightness to the filling.
Combine Fruits: Add the chopped rhubarb to the stockpot, mix well with the berries and sugar-water mixture. Then, add the apple mixture, ensuring everything is evenly distributed.
Incorporate Tapioca: Sprinkle the dry tapioca over the fruit mixture in the stockpot. Stir well to ensure it is evenly distributed. Do not use whole tapioca pearls, as they require a different cooking method.
Prepare Jars: Wash your pint jars thoroughly. Place them upside down in a 9×13 inch baking pan. Add hot water to the pan, filling it about halfway up the sides of the jars. Place the pan in the oven, preheated to 250°F (120°C), to keep the jars warm. This helps prevent the jars from cracking when filled with hot filling.
Prepare the Canner: Fill your hot water bath canner with hot water. Cover the canner and start heating the water to a boil.
Cook the Filling (Part 1): Increase the heat under the stockpot to medium. Stir the fruit mixture frequently, and cook for about 15 minutes, or until the rhubarb begins to soften.
Prepare Cornstarch Slurry: In a separate bowl, whisk together the cold water and cornstarch until smooth. This creates a slurry that will thicken the filling.
Thicken the Filling: Slowly pour the cornstarch slurry into the hot fruit filling, stirring constantly to prevent lumps from forming. Continue to stir and cook until the filling has thickened and becomes glossy. This usually takes about 2-3 minutes. Once thickened, remove the stockpot from the heat.
Fill the Jars: Carefully remove the hot jars from the oven using oven mitts. One at a time, ladle the hot pie filling into the jars, leaving 1 1/2 inch headspace at the top of each jar.
Remove Air Bubbles: After filling each jar, insert a clean knife down the side of the jar to release any trapped air bubbles. Gently run the knife around the inside of the jar.
Prepare Jars for Sealing: Wipe the rim of each jar with a clean, hot, damp cloth to remove any spilled filling. This ensures a proper seal.
Seal the Jars: Place a hot, clean lid on each jar, centering it on the rim. Screw on the canning ring, tightening it fingertip-tight. Avoid over-tightening, as this can prevent the jar from sealing properly.
Process in Water Bath: Using a jar lifter, carefully lower the filled jars into the canning rack. Then, lower the rack into the boiling water in the canner. The water should cover the jars by at least 1 inch. If necessary, add more boiling water.
Process the Jars: Cover the canner and bring the water back to a rolling boil. Once a rolling boil is achieved, start timing the processing. Process the jars for 20 minutes. (Note: Processing times may vary depending on your altitude. Consult a canning guide for adjustments.)
Cool and Check Seals: After the processing time is complete, turn off the heat and carefully remove the canner lid, tilting it away from your face to avoid steam burns. Using the jar lifter, carefully raise the canning rack and place the jars onto a towel-covered surface. Allow the jars to cool completely, undisturbed, for 12-24 hours.
Verify Seals: After the jars have cooled completely, check the seals. The lids should be concave and should not flex when pressed down. If a lid doesn’t seal, you can either reprocess the jar with a new lid within 24 hours, or store the unsealed jar in the refrigerator and use the filling within a week.

Expert Tips & Tricks

Sugar Adjustment: This recipe leans towards a slightly tart flavor profile, which my family enjoys. Feel free to adjust the amount of sugar to suit your preference. Taste the filling before adding the cornstarch slurry and adjust as needed.
Berry Combinations: Don’t be afraid to experiment with different berry combinations. Blueberries, raspberries, and even strawberries can be used in place of or in addition to blackberries and huckleberries.
Apple Variety: The type of apple you use will affect the final flavor and texture of the filling. Firmer apples like Granny Smith will hold their shape better, while softer apples like McIntosh will break down more, creating a smoother filling.
Tapioca vs. Cornstarch: While this recipe calls for both tapioca and cornstarch, you can use one or the other. If using only cornstarch, you may need to use slightly less as it has a stronger thickening power.
Prevent Floating Fruit: To help prevent the fruit from floating to the top of the jars during processing, be sure to pack the fruit firmly into the jars and leave the proper amount of headspace.

Serving & Storage Suggestions

This canned berry-rhubarb pie filling is incredibly versatile. Here are a few ways to enjoy it:

Classic Pie: The most obvious use is in a classic pie. Simply pour the contents of one jar into a prepared pie crust and bake according to your pie crust recipe.
Sour Cream Pie Variation: Open one jar and mix in 1 cup of sour cream. Serve chilled or bake in a pie crust for a tangy twist.
Cream Cheese Pie Variation: Open one jar and blend in 8 oz of softened cream cheese until smooth. Serve chilled with whipped cream or bake in a pie crust.
Cake Filling/Swirl: Use a cup or two of the canned filling as a swirl in bundt cake batter or as a filling between baked cake layers.
Topping: Spoon over yogurt, ice cream, pancakes, or waffles.

Storage: Properly sealed jars of canned berry-rhubarb pie filling can be stored in a cool, dark place for up to one year. Once a jar is opened, refrigerate any remaining filling and use it within one week.

Nutritional Information

(Estimated, per 1/8 of total yield. Actual values may vary based on ingredient measurements and specific brands.)

Nutrient	Amount per Serving	% Daily Value
Calories	150 kcal	8%
Total Fat	0.5g	1%
Saturated Fat	0g	0%
Cholesterol	0mg	0%
Sodium	50mg	2%
Total Carbohydrate	35g	13%
Dietary Fiber	2g	7%
Sugars	30g	–
Protein	0.5g	1%

Variations & Substitutions

Sugar-Free Option: Use a sugar substitute suitable for canning, such as Splenda for Baking, following package instructions for equivalent sweetness. Be aware that sugar is also a preservative, so sugar-free fillings may have a shorter shelf life.
Spice it Up: Add a pinch of cinnamon, nutmeg, or ginger to the filling for a warmer, spiced flavor.
Thickening Agent Alternatives: If you don’t have tapioca or cornstarch, you can use arrowroot powder as a thickening agent. Use slightly less arrowroot powder than cornstarch, as it has a stronger thickening power.
Gluten-Free Pie: Make this recipe gluten-free by using a gluten-free pie crust.

FAQs (Frequently Asked Questions)

Q: Why do I need to process the jars in a water bath canner?
A: Processing in a water bath canner creates a vacuum seal, which prevents spoilage and extends the shelf life of the pie filling. This ensures it’s safe to store at room temperature for an extended period.

Q: Can I use frozen berries instead of fresh?
A: Yes, frozen berries can be used, but do not thaw them before adding them to the stockpot. They may release more liquid during cooking, so you might need to adjust the cooking time slightly.

Q: My filling didn’t thicken properly. What can I do?
A: If the filling isn’t thick enough, you can try adding a bit more cornstarch slurry. Mix 1 tablespoon of cornstarch with 2 tablespoons of cold water, then stir it into the simmering filling. Cook until thickened.

Q: How do I know if my jars are properly sealed?
A: After cooling, the lids should be concave and should not flex when pressed down in the center. If a lid pops up and down, it’s not properly sealed and should be refrigerated and used promptly.

Q: Can I double or triple this recipe?
A: Yes, you can easily double or triple this recipe. Just make sure to use a stockpot large enough to accommodate the increased volume of ingredients. You may need to adjust the cooking time slightly.

Final Thoughts

There’s something truly special about creating a pantry full of homemade preserves, a testament to your connection with the seasons and a source of joy throughout the year. This canned berry-rhubarb pie filling is more than just a recipe; it’s a tradition, a memory, and a taste of summer that you can savor any time. So gather your berries, roll up your sleeves, and get ready to fill your kitchen with the irresistible aroma of homemade goodness. Don’t hesitate to tweak the recipe to suit your tastes, and most importantly, share the delicious results with those you love. Happy canning!

Canned Fruit Pie Filling or Canned Dessert Filling Recipe