Summer Berry Crumb Bars | The Fancy Pants Kitchen

Ingredients

• 3 cups (375 grams) all-purpose flour
• 1 & 1/3 cups granulated sugar, divided
• 1 tbsp lime zest
• 1 tsp baking powder
• 3/4 tsp kosher salt
• 1 cup cold unsalted butter, cubed
• 1 large egg , lightly beaten
• 1 & 1/2 tbsp cornstarch
• 2 cups fresh raspberries
• 1 cup chopped fresh strawberries
• 1 cup fresh blackberries
• 1 cup fresh blueberries
• 3 tbsp fresh lime juice
• 1 tsp vanilla extract