Sweet, sweet summer – the season bursting with berries. I try my best to eat seasonally – I very rarely have fresh blueberries when they are not in season, so I wait with anticipation for them to show up at the farmers markets. It makes them all the sweeter for the waiting. But that sometimes leads me to overbuy, so after the syrup and jams are made and I’ve eaten my fill out of hand, I look for some fun ways to bake with them. I found a blueberry lemon bar recipe in a magazine and the idea really excite me. I made it, but it was a disaster as a bar. It never set, the blueberries sort of bled out of the runny filling and all the crust was a sodden mess. I did taste the bit that had almost firmed up around the edges, and I will say, the flavor was delicious. The recipe, however, was a complete failure (that’s why I test and test). I went to work tinkering around until I ended up with what I wanted – a tangy lemon bar with delicious pops of fresh blueberry.
The lemon filling falls somewhere between custard and cake with a nice, tart finish and a sweet swirl of blueberry. They cut into lovely bars and make a wonderful picnic treat. They are nicely sweet, so you can serve them in small pieces. I get requests for these every summer!
Lemon Blueberry Bars
For the Crust:
1 cup all purpose flour
½ cup (1 stick) unsalted butter, cut into pieces
¼ cup granulated sugar
Zest of one lemon (see below)
1 Tablespoon milk
For the filling:
5 ounces blueberries
1 ½ cup granulated sugar plus 2 Tablespoons, divided
4 lemons, zested and juiced
1 ¼ cup all-purpose flour
For the Crust:
Preheat the oven to 350 degrees. Line an 8-inch square baking pan with non-stick foil or parchment paper, with some edges overhanging.
Place the flour, butter, sugar and lemon zest in the bowl of a food processor and process until crumbly. Drizzle in the milk until the dough begins to come together. Spread the dough into the prepared pan and press into an even layer. Bake for 20 minutes.
For the Filling:
Wipe out the food processor and drop in the berries. Puree until smooth then push through a fine mesh strainer into a small sauce pan. Add 2 Tablespoons sugar and bring to a simmer over medium heat until the sugar has dissolved. Raise the heat and boil for a few minutes until thickened. Set aside.
Rinse and dry the food processor completely, then add the zest of three lemons, the juice of all four and the eggs. Process until fluffy, then add the remaining 1 ½ cup sugar and blend until smooth. Add the flour and blend until completely combined and smooth, Pour the filling over the crust, then drizzle over the blueberry puree. It will sink into the lemon filling.
Bake for 25 – 30 minutes until the center is set and no longer jiggly in the center. Cool the bars completely then sprinkle the tops generously with confectioners’ sugar and cut into small pieces