Blackberry Buttermilk Pie
A rustic, custardy pie with tart buttermilk and fresh blackberries in a flaky crust. The filling is custard-like and slightly tangy, with juicy berries throughout. This is an easy, foolproof dessert that's best served chilled or at room temperature with whipped cream or vanilla ice cream.
- Prep
- 15 min
- Cook
- 48 min
- Wait
- 3 hr
- Total
- 4 hr 3 min
- Makes
- 1 pie (8 slices)
Steps
Before you start
- Ensure eggs are at room temperature for a smooth, even custard.
- If using a homemade pie crust, chill it for 30 minutes before filling.
- Preheat the oven and have all ingredients measured before you begin mixing.
Preheat and position crustOven 375°F / 190°C
- Preheat your oven to 375°F (190°C).
- Place the unbaked pie crust in a 9-inch (23 cm) pie dish.
- No blind baking is needed for this recipe.
- The crust will bake together with the filling.
Whisk filling ingredients
- In a medium bowl, whisk together the buttermilk, eggs, granulated sugar, brown sugar, melted butter, and vanilla extract until completely smooth.
- Whisk vigorously for about 1 minute to ensure the mixture is pale and homogeneous with no visible streaks of egg or sugar.
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Ready when: Mixture is pale, smooth, and free of streaks
Tip: Use room-temperature eggs for a silky custard texture. Vigorous whisking incorporates air and ensures an even, light filling.
Stir in salt and nutmeg
- Whisk in the salt and ground nutmeg until evenly distributed throughout the filling.
- The spice adds warmth and subtle complexity without overpowering the buttermilk tang.
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Ready when: Nutmeg is evenly incorporated with no visible specks
Pour filling into crust
- Carefully pour the filling mixture into the unbaked pie crust, leaving about 1/4 inch (6 mm) from the rim to prevent overflow during baking.
- Pour slowly and steadily to avoid creating air bubbles in the custard.
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Ready when: Filling reaches just below the crust rim
Tip: If you overfill, transfer excess to a small ramekin and bake separately for 5–7 minutes at 375°F (190°C) as a custard cup.
Scatter blackberries
- Scatter the fresh blackberries evenly over the filling.
- Gently press a few berries beneath the surface so they are partially submerged.
- Some will float to the top and some will sink during baking—this is normal and desired.
- The blackberries will soften and release their juices during baking, coloring the custard with their tart flavor.
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Ready when: Blackberries are distributed across the surface
Tip: If your blackberries are particularly large or juicy, toss them with 1 tablespoon cornstarch before adding to prevent excess moisture from softening the crust.
Bake until custard is setOven 375°F / 190°C
- Place the pie on a baking sheet (to catch any drips).
- Bake at 375°F (190°C) for 45–50 minutes.
- The crust should be golden brown and the filling should jiggle only slightly in the very center when the pie is gently shaken.
- A knife inserted 2 inches (5 cm) from the edge should come out clean; the absolute center may have a slight wobble, which is fine and expected.
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Ready when: Crust is golden; filling jiggles only slightly in center; knife near edge comes out clean
Tip: Don't overbake. The pie continues to set as it cools, and overbaking results in a rubbery, separated custard. If the crust is browning too quickly, tent loosely with foil.
Cool pie before serving
- Remove from the oven and place on a wire cooling rack.
- Let cool at room temperature for at least 1 hour until lukewarm.
- Then transfer to the refrigerator and chill for at least 2 hours (preferably overnight) before slicing.
- This allows the custard to set completely and firm up, making the pie easier to slice.
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Ready when: Pie is chilled and custard is firm to the touch
Tip: Chilling makes the pie much easier to slice cleanly and improves the texture. You can serve it chilled or bring slices to room temperature, as preferred.
Good to know
Tips
- The key to this pie is not overbaking. The custard will continue to set as it cools, so pull it out when the center still has a slight jiggle. Overbaking results in a tough, watery filling.
- Serve with whipped cream, vanilla ice cream, or a dollop of sour cream to contrast the sweetness and custard richness.
- This pie is best eaten the day it's made or the next day. After that, the crust may soften slightly from the custard moisture.
- For the best flavor, use fresh blackberries in peak season (June–July in most regions). If making this year-round, quality frozen berries are a reliable option.
Make ahead
The unbaked pie can be assembled, covered with plastic wrap, and refrigerated for up to 4 hours before baking. Bake directly from cold, adding 5 minutes to the baking time.
Storage & reheating
Room temperature: Store loosely covered for up to 2 hours. Refrigerator: Cover with plastic wrap and store for up to 3 days. Freezer: Wrap tightly in plastic wrap and then foil; freeze for up to 2 months. Thaw overnight in the refrigerator before serving. To reheat: Warm slices in a 300°F (150°C) oven for 10–15 minutes if desired.
Substitutions
- unbaked 9-inch (23 cm) pie crust → Homemade pie crust or graham cracker crust. Use your favorite pie crust recipe, or swap for a no-bake graham cracker crust for a different flavor and texture.
- fresh blackberries → Raspberries, marionberries, blueberries, or mixed berries. Frozen berries (thawed and drained) work well but may release extra liquid; drain them thoroughly before adding.
- buttermilk → 1 cup whole milk mixed with 1 tablespoon lemon juice or white vinegar. Let the mixture sit for 5 minutes to sour before whisking into the filling.
- light brown sugar → Additional 1/4 cup granulated sugar. The pie will be slightly less complex in flavor but still delicious. Reduce the salt to 1/8 teaspoon if using only granulated sugar.
