From above, the pie has a deeply golden lattice-style top redesigned into a large elegant π symbol at the center, surrounded by a glossy ring of star-cut vents. The crimped crust is bronzed and sparkling with coarse sugar, while hints of vivid blackberry-blueberry filling peek through for a dramatic cosmic purple-and-gold contrast.

Pi Day Galaxy Berry Pie

Category Dessert
Prep 40 minutes
Cook 65 minutes
Style American
Technique Baking
Diet Friendly Vegetarian

Daily Recipe: March 14, 2026

For Pi Day in New York City, this showstopping pie leans into the math theme with a bold π symbol on top and a striking deep-purple filling made from blackberries and blueberries. A buttery all-butter crust keeps it classic and flaky, while lemon zest brightens the berries and a touch of cornstarch helps the slices hold their shape beautifully for a clean, Instagram-worthy cut.

Ingredients (for 8)

Preparation

  1. Step 1 - 🥣🌾🧂
    In a large bowl, whisk together the all-purpose flour and salt.
  2. Step 2 - 🧈🔪✨
    Add the very cold cubed unsalted butter and cut it into the flour until the mixture looks like coarse crumbs with some pea-sized pieces.
  3. Step 3 - 💧✋🥟
    Add 6 tablespoons ice water and mix gently until the dough starts to come together. Add 1 to 2 more tablespoons if needed.
  4. Step 4 - ⭕❄️⏳
    Divide the dough into 2 disks, wrap them, and chill for at least 1 hour.
  5. Step 5 - 🫐🍋🍬
    In a large bowl, gently toss the blackberries and blueberries with 3/4 cup granulated sugar, brown sugar, cornstarch, lemon zest, 2 tablespoons lemon juice, and vanilla extract.
  6. Step 6 - ⏲️🥄🫐
    Let the berry filling sit for 15 minutes so the fruit can release some juices.
  7. Step 7 - 🔥🍽️🌡️
    Preheat the oven to 425°F and place a baking sheet inside to heat up.
  8. Step 8 - 🪵🍥🌾
    On a lightly floured surface, roll out 1 dough disk into a 12-inch round.
  9. Step 9 - 🥧↘️👌
    Fit the rolled dough into a 9-inch pie dish, leaving a slight overhang.
  10. Step 10 - 🫐🥄🥧
    Spoon the berry filling and all its juices into the crust.
  11. Step 11 - 🥟π⭐
    Roll out the second dough disk. Cut a large π symbol in the center and add small decorative vent holes around it, or use strips to form the π shape on top.
  12. Step 12 - 🔒🥧✂️
    Place the decorated top crust over the filling. Trim excess dough, then fold and crimp the edges to seal.
  13. Step 13 - ❄️🥧🔟
    Chill the assembled pie for 10 minutes to help the design hold its shape.
  14. Step 14 - 🥚✨🍬
    Brush the top crust with the beaten egg and sprinkle with coarse sanding sugar.
  15. Step 15 - 🔥🥧⏰
    Set the pie on the hot baking sheet and bake at 425°F for 20 minutes.
  16. Step 16 - 🌡️⬇️🥧
    Reduce the oven temperature to 375°F and bake 35 to 45 minutes more, until the crust is deep golden and the filling bubbles thickly through the vents.
  17. Step 17 - 🛡️🥧🪙
    If the crust edges brown too fast, loosely cover them with foil during the last 20 minutes.
  18. Step 18 - 🪟⏳🍰
    Let the pie cool for at least 3 hours so the filling can set properly.
  19. Step 19 - 🍽️🍦😋
    Slice and serve the pie as is, or enjoy with whipped cream or vanilla ice cream.

Additional

Fun Pi Day idea: dust the cooled pie lightly with powdered sugar through a paper stencil of the digits 3.14159 around the edge for extra flair. If you want a more NYC-inspired touch, serve each slice with a spoonful of lightly sweetened whipped cream and a tiny lemon zest curl. Kids can help cut out the π symbol and decorative stars.