
Active time: 20 min Start to finish: 9 hr
Recipe information
Yield
Makes about 9 squares
Ingredients
For crust
For filling
Preparation
Make crust:
Step 1
Preheat oven to 375°F. Line a buttered 8-inch square glass baking dish with 2 (18- by 6-inch) sheets of foil, overlapping them in opposite directions so that there is overhang on all 4 sides.
Step 2
Pulse together flour, cornmeal, confectioners sugar, salt, and butter in a food processor until mixture resembles coarse meal. Press onto bottom of baking dish and 1 inch up sides. Bake in middle of oven until golden brown, about 20 minutes.
Make filling while crust bakes:
Step 3
Whisk together eggs, sugar, flour, and zests. Whisk in juices, milk, and a pinch of salt. Toss blueberries with jam in another bowl.
Step 4
Whisk egg mixture and immediately pour into hot crust, then bake until just set, about 17 minutes. Gently spoon berries evenly over top and bake 2 minutes more. Transfer baking dish to a rack and cool.
Step 5
Chill, covered, overnight (8 hours). Use foil to lift dessert out of dish, then cut into squares.