Blackberries paired with blueberries make a classic American pie, but I go easy on the blackberries; their more assertive flavor and seedy texture can easily overwhelm the blueberries.
Make the dough: In a large bowl, stir the flour, cornmeal, sugar, lemon zest, and salt. Using a pastry blender or two knives, begin to cut the butter into the flour. While the butter is still in large pieces, add the shortening to the bowl and continue to cut the fat into the flour until most pieces are the size of large peas.
With a big fork, stir in the lemon water, 1 to 2 Tbs. at a time, until the mixture looks shaggy but is moist enough to hold together when pressed. With well-floured hands, gently gather and press the dough into two equal disks, handling it only enough to make the edges of the disks reasonably smooth. Wrap the dough in plastic and chill for at least 60 minutes, but preferably 2 to 4 hours, before rolling.
Roll the bottom crust: Roll one disk of the dough out on a lightly floured surface into a 13-inch circle about 1/8 inch thick. Gently transfer the dough to a 9-inch metal, glass, or ceramic pie plate (I like to fold the dough in half and unfold it into the pan). Don’t stretch the dough as you line the pan, or it will spring back when baked. If necessary, trim the overhanging dough to 1 inch from the edge of the pan. Refrigerate until needed.
Make the filling: In a large bowl, whisk 2/3 cup of the sugar with the cornstarch, allspice, cinnamon, and salt. Add the blueberries and blackberries and toss gently until thoroughly combined. Set aside.
Fill and top the pie: Roll the second disk of dough out on a lightly floured surface into a 13-inch circle about 1/8 inch thick. Using a sharp knife or pizza cutter, cut the dough into 3/4-inchwide strips. Pour the fruit filling into the pastry-lined pie plate, being sure to include any dry ingredients remaining in the bowl. Lay five of the dough strips over the pie, parallel to each other and spaced evenly (use longer strips in the center of the pie and shorter strips near the edges).
Meanwhile, position a rack in the center of the oven and set a foil-lined heavy-duty rimmed baking sheet on the rack. Heat the oven to 425°F. Just before baking, brush the lattice top with the melted butter and sprinkle with the remaining 1 Tbs. sugar. Put the pie on the heated baking sheet and bake for 15 minutes. Reduce the oven temperature to 375°F and bake until the fruit is bubbling consistently at the center of the pie, 60 to 80 minutes more. This is important—if it isn’t bubbling near the center, it hasn’t thickened yet. If the crust starts to get too brown, cover it loosely with foil during the last few minutes of the baking time.
Let the pie cool to just warm before serving.
Make Ahead Tips
The dough can be made up to 2 days ahead and refrigerated, or up to 2 months ahead and frozen. And the baked and cooled pie can be stored at room temperature for up to 2 days.
Be sure to use room-temperature berries. Cold fruit straight from the refrigerator will prevent your dessert from baking evenly.Want to see the making of a lattice-top pie crust in action? Check out our video.
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Fantastic! I ended up using all blueberries and no blackberries. Neither my daughter nor my husband like blueberries, but it was my son's pick, and guess what? Once my husband and daughter saw the pie come out of the oven, they decided they might as well try it (they wouldn't want to be rude, after all). Loved it - now they're giving blueberries a second chance. All's well that ends well : )
This recipe was AWESOME! It was so delicious. I followed the exact recipe. It is fun to make!
This is a delicious pie! The flavors meld wonderfully, and it's just sweet enough. I found the pastry quite easy to work with, though I had to add a tbsp or so of extra liquid. I rolled it out between sheets of wax paper, and whenever it started to get sticky I popped everything in the freezer for a couple minutes. The crust browned really quickly, though- mine probably should have been tented after the initial 425 bake.
the best pie ever!
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