01 -
Grab a spacious mixing bowl and whisk together the sugar, flour, cinnamon, and allspice until well combined. Gently fold in your sliced peaches and blueberries, making sure every piece gets coated with the sweet spice mixture.
02 -
Heat your oven to 400°F. On a clean, lightly floured counter, roll out half your pie dough into a thin circle about 1/8-inch thick. Carefully transfer this to your 9-inch pie dish, letting it settle naturally. Trim the edges so they're even with the rim of the dish.
03 -
Spoon your fruit mixture into the prepared crust, spreading it evenly. Break the butter into small pieces and scatter them over the top of the fruit - this adds richness and helps create a lovely sauce as it bakes.
04 -
Roll out your remaining dough to the same thickness as before. Using a sharp knife or pizza cutter, slice it into strips about 1/2-inch wide. Weave these strips over your pie in a classic lattice pattern - it's easier than it looks! Trim the strip ends and press them firmly to the bottom crust edge, then crimp the entire border with your fingers or a fork.
05 -
Brush the lattice strips gently with milk using a pastry brush, then sprinkle generously with cinnamon sugar for that golden, sparkly finish. Slide into your preheated oven and bake for 40-45 minutes, until the crust turns a beautiful golden brown and you can see the filling bubbling through the lattice. Let it cool completely on a wire rack before slicing.