Double Chocolate Chip Lemon Bars

All I can say is: WOW! If you haven't tried lemon with white chocolate, you MUST make these bars; they're truly fabulous. They're tart from the fresh lemon (juice and zest) and sweet from the double dose of chocolate - white and semisweet chips. 

I also love the fact that this is a one-bowl baking adventure - meaning, everything comes together in one mixing bowl, and then the oven does the rest. 

These incredible bars will make a great addition to any summer party or picnic! 

Double Chocolate Chip Lemon Bars

Cooking spray
2 1/4 cups all-purpose flour
1 teaspoon baking powder
1/4 teaspoon baking soda
1/4 teaspoon salt
1/2 cup (1 stick) unsalted butter, softened
1/2 cup granulated sugar
1/2 cup packed light brown sugar
2 large eggs
2 teaspoons finely grated lemon zest (zest the lemons before you juice them)
1/4 cup fresh lemon juice 
1 teaspoon vanilla extract
1/2 cup semi-sweet chocolate chips
1/2 cup white chocolate chips

Preheat the oven to 350 degrees. Line the bottom of a 9x12-inch baking pan with parchment paper and spray the sides with cooking spray.
In a medium bowl, combine the flour, baking powder, baking soda, and salt. Mix well with a fork and set aside.
In a mixing bowl, combine the butter, granulated sugar, and brown sugar. Mix on medium speed until light and fluffy. Beat in the eggs, one at a time. Scrape down the sides of the bowl. Beat in the lemon zest, lemon juice, and vanilla. Gradually beat in the flour mixture. Fold in the white and semisweet chocolate chips.
Spoon the batter into the prepared pan and smooth the surface. 
Bake for 18 to 20 minutes, until a wooden pick inserted near the center comes out clean. 
Cool on wire rack before cutting into 24 bars. 

Makes 24 bars