Oregon Marionberry Pie

Cultural Context

The marionberry is Oregon's signature berry — a cross between the Chehalem and Olallieberry varieties developed at Oregon State University in 1956 and named after Marion County. Often called "the Cabernet of blackberries" for its complex, earthy sweetness with bright acidity, marionberries are deeply woven into Pacific Northwest food culture. This classic double-crust pie celebrates the berry at its peak, showcasing the fruit with minimal fuss and maximum flavor — exactly how Oregonians have been baking it for generations at farmers' markets, county fairs, and family gatherings across the Willamette Valley.

Ingredients

Flaky Pie Crust (Double Crust)

• 320 g (11.3 oz / 2½ cups) all-purpose flour
• 10 g (2 tsp) granulated sugar
• 5 g (1 tsp) fine sea salt
• 225 g (8 oz / 1 cup) unsalted butter, cold, cut into ½-inch cubes
• 80 ml (2.7 fl oz / ⅓ cup) ice water, plus more as needed
• 15 ml (1 tbsp) apple cider vinegar

Marionberry Filling

• 900 g (31.7 oz / 6 cups) fresh or frozen marionberries — do not thaw if frozen
• 150 g (5.3 oz / ¾ cup) granulated sugar
• 45 g (1.6 oz / ⅓ cup) cornstarch
• 15 ml (1 tbsp) fresh lemon juice
• 5 ml (1 tsp) pure vanilla extract
• 1 g (¼ tsp) ground cinnamon
• 1 g (¼ tsp) fine sea salt
• Zest of ½ lemon

Egg Wash & Finishing

• 1 large egg
• 15 ml (1 tbsp) heavy cream or whole milk
• 10 g (2 tsp) turbinado sugar, for sprinkling

Substitutions:

• Marionberries → blackberries or boysenberries (slightly less complex flavor, but works well)
• Cornstarch → 50 g (¼ cup) tapioca starch (produces a slightly more glossy, softer set)
• Apple cider vinegar → white vinegar or lemon juice (for crust tenderness)

Equipment

• 23 cm (9-inch) glass or ceramic pie plate
• Rolling pin
• Large mixing bowl
• Pastry blender or food processor (optional)
• Parchment paper
• Rimmed baking sheet (to catch drips)
• Pastry brush

Instructions

Making the Pie Crust (Active time: 20 min)

1. Whisk the dry ingredients: In a large bowl, combine flour, sugar, and salt. The mixture should be evenly blended.

2. Cut in the butter: Add cold butter cubes and work them in using a pastry blender or your fingertips until the mixture resembles coarse meal with some pea-sized pieces remaining. These butter chunks create flaky layers — do not over-mix.

3. Add the liquid: Combine ice water and vinegar. Drizzle over the flour mixture, tossing with a fork until the dough just holds together when squeezed. Add more ice water 1 tablespoon at a time if needed. The dough should feel shaggy, not smooth.

4. Form and chill: Divide the dough into two discs (one slightly larger for the bottom crust). Wrap each in plastic wrap and refrigerate for at least 1 hour or up to 2 days. The dough should feel firm but pliable when ready to roll.

Preparing the Filling (Active time: 10 min)

5. Toss the filling: In a large bowl, gently combine marionberries, sugar, cornstarch, lemon juice, lemon zest, vanilla, cinnamon, and salt. Fold carefully to avoid crushing the berries. Let the mixture sit for 10 minutes — you should see the sugar begin to draw out the berry juices, creating a syrupy coating.

Assembly (Active time: 10 min)

6. Roll the bottom crust: On a lightly floured surface, roll the larger dough disc into a 33 cm (13-inch) circle, about 3 mm (⅛ inch) thick. Transfer to the pie plate, pressing gently into the corners. Let the excess hang over the edge.

7. Fill the pie: Pour the berry filling into the crust, mounding slightly in the center. The filling will settle as it bakes.

8. Roll and place the top crust: Roll the second disc into a 30 cm (12-inch) circle. Lay it over the filling. Trim the overhang to 2 cm (¾ inch), then fold the edges under and crimp decoratively by pressing with a fork or pinching with your fingers.

9. Vent and glaze: Cut 5–6 small slits in the top crust to allow steam to escape. Whisk together the egg and cream, then brush the top crust evenly with the egg wash. Sprinkle turbinado sugar over the top for a golden, crunchy finish.

Baking (Active time: 5 min)

10. Preheat oven to 220°C (425°F). Place a rimmed baking sheet on the lower rack to catch drips.

11. Bake at high heat: Place the pie on the center rack and bake for 20 minutes. The crust should begin to turn golden at the edges.

12. Reduce heat and finish baking: Lower the oven to 190°C (375°F) and continue baking for 35–45 minutes, until the crust is deep golden brown and you can see thick, bubbling juices through the vents. If the edges brown too quickly, tent them with foil.

Cooling & Serving

13. Cool completely: Remove the pie from the oven and let it cool on a wire rack for at least 2 hours. This is critical — the filling needs time to set. Cutting too early results in a runny pie.

14. Slice and serve: Cut into wedges and serve at room temperature or slightly warm. A scoop of vanilla bean ice cream or a dollop of lightly sweetened whipped cream is the classic Oregon accompaniment.

Food Safety & Storage

• Minimum safe internal temperature: Egg wash is fully cooked at crust temperatures; filling reaches a full boil during baking
• Storage: Cover loosely and store at room temperature for up to 2 days, or refrigerate for up to 4 days
• Freezing: Yes — wrap the fully cooled pie tightly in plastic wrap and foil; freeze for up to 3 months. Thaw overnight in the refrigerator, then reheat
• Reheating: Warm slices in a 175°C (350°F) oven for 10–15 minutes until heated through and the crust re-crisps

Serving Suggestions

• Serve with a generous scoop of vanilla bean ice cream (Tillamook brand for full Oregon authenticity)
• Pairs beautifully with a glass of Oregon Pinot Noir or a cup of locally roasted coffee
• Traditional serving style: generous wedge on a simple plate, letting the deep purple filling speak for itself

Scaling Notes

Half recipe (½×): Make a single-crust galette instead — roll one crust, mound half the filling in the center, and fold the edges over. Bake at the same temperatures but reduce total bake time by about 10 minutes.

Double recipe (2×): Make two full pies. Do not try to double the filling in a single pie — it won't bake through properly. Crust can be made in one batch and divided into four discs.

Chef's Notes

• Sourcing: Fresh marionberries are available July through August at Oregon farmers' markets and some West Coast grocery stores. Frozen marionberries are available year-round online and at stores like Trader Joe's, Fred Meyer, and WinCo in the Pacific Northwest. Do not thaw frozen berries before using — they hold their shape better.
• Make-ahead: The pie dough can be made up to 2 days ahead and refrigerated, or frozen for up to 1 month. The assembled, unbaked pie can be frozen and baked directly from frozen — add 15–20 minutes to the bake time.
• Variations: Add 15 ml (1 tbsp) orange juice and a pinch of orange zest for a citrus twist. Some bakers add a layer of cream cheese beneath the filling for a tangy contrast. For a lattice top, cut the second crust into strips and weave them over the filling.
• Common pitfalls: The #1 mistake is not letting the pie cool long enough — patience is rewarded with clean slices. Using too little thickener results in a soupy pie. If using frozen berries, do not increase the sugar — frozen berries often taste sweeter once baked.

Nutrition Information (Optional)

Per serving (1/8 of pie): approximately 420 kcal

• Protein: 5g | Fat: 20g | Carbohydrates: 57g | Fiber: 5g

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Version History:

• v1 (2026-03-23): Initial recipe by @flavor_atlas_coordinator

Credits:

• Recipe development: @flavor_atlas_coordinator
• Testing: @flavor_atlas_coordinator
• Verification: @Coordinator
• Photography: Pending

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Recipe Location: /Recipes/west-coast-us/west-coast-us_oregon-marionberry-pie_v1.md Images Location: /Images/oregon-marionberry-pie/