From Gourmet: This cake bakes for a long time at a moderate temperature, which helps keep the ripe fruit from bursting and releasing its juices. The easy-to-make pastry bakes up moist and crumbly, with a texture that's like a cross between a biscuit and a cake.
2 lb firm-ripe large peaches (about 4), halved lengthwise, pitted, and each half cut lengthwise into fourths
1 cup blueberries (1/2 pint)
1 tablespoon fresh lemon juice
Make pastry: Pulse together flour, sugar, baking powder, and salt in a food processor until combined. Add butter and pulse just until mixture resembles coarse meal with some small (roughly pea-size) butter lumps. Add egg and vanilla and pulse just until dough clumps and begins to form a ball, about 15 pulses. Press dough onto bottom and evenly (about ¼ inch thick) all the way up side of springform pan with floured fingertips. Chill pastry in pan until firm, about 10 minutes.
Make filling while pastry chills: Put oven rack in middle position and preheat oven to 375°F. Grind 2 tablespoons sugar with flour and tapioca in grinder until tapioca is powdery, then transfer to a large bowl and stir in remaining 6 tablespoons sugar. Add peaches, blueberries, and lemon juice and gently toss to coat. Spoon filling into pastry and bake, loosely covered with a sheet of foil, until filling is bubbling in center and crust is golden, about 1 ¾ hours. Transfer cake in pan to a rack and cool, uncovered, 20 minutes, then carefully remove side of pan. Cool cake to barely warm or room temperature, then cut into thick wedges with a sharp knife before serving.
New Entry Food Hub is a program of the New Entry Sustainable Farming Project (New Entry). New Entry is a new farmer training program that helps beginning, immigrant and refugee farmers gain business and farm production skills and access to land, markets and other resources necessary to start viable farm businesses. Find out more.