Pi Day Pie!

Mar 4, 2024 | South Blue Valley

We're celebrating Pi Day from March 1st - 14th at Mathnasium with in-center fun, a Charity Contest, and more! Don't let us have all the fun, join in at home by playing math-y games with your kids, talking about π, and (of course) baking a pie for everyone to enjoy!

This year we'd like to spotlight this Pi Day Pie from Pillsbury as our Pi Day Dessert of choice. Not only does it look delicious, it incorporates the number pi fabulously!


  • 3 refrigerated pie crusts (from 2 boxes Pillsbury™ refrigerated pie crusts), softened as directed on box
  • 1 cup sugar
  • 5 tablespoons cornstarch
  • 2 tablespoons quick-cooking tapioca
  • 1/4 teaspoon salt
  • 3 cups fresh or frozen (thawed and drained) blackberries
  • 2 cups fresh or frozen (thawed and drained) raspberries
  • 2 cups fresh or frozen (thawed and drained) blueberries
  • 1 tablespoon milk
  • 2 teaspoons sugar


  1. Heat oven to 450°F. Unroll 1 crust in ungreased 9-inch glass pie plate. Press crust firmly against side and bottom. Trim along edge. Set aside.
  2. Unroll 1 crust on work surface. Using small number-shaped cutters, cut out numerals representing pi to as many digits as desired (for example, 3.14159265). Set aside.
  3. In large bowl, stir together 1 cup sugar, the cornstarch, tapioca and salt; gently toss with berries. Let stand 15 minutes. Spoon into crust-lined pie plate.
  4. Unroll 1 crust on work surface. Using small sharp knife, cut pi symbol in center of crust. Place crust over filling. Wrap excess top crust under bottom crust edge. Press edges together to seal; flute. Brush crust with milk; arrange numerals around edge of crust. Sprinkle crust with 2 teaspoons sugar.
  5. Place pie on middle oven rack; place large cookie sheet on rack below pie plate in case of spillover. Bake 15 minutes. Reduce oven temperature to 375°F. Cover edge of crust with strips of foil to prevent excessive browning. Bake 40 to 45 minutes longer or until crust is golden brown and filling is bubbly. Let stand 2 hours before serving.

Share your Pi Day Pies with us on Facebook and Instagram (or bring us a slice in the center)!