Cinnamon Sugar Blueberry Crumb Bars

Bahan-bahan (16 porsi)

• 2 1/4 cups all purpose flour
• 3/4 cup packed light or dark brown sugar
• 1/2 teaspoon kosher salt
• 2 sticks (1 cup) Land O Lakes® Salted Butter, at room temperature
• 1/4 cup granulated sugar
• 1 teaspoon ground cinnamon
• 2 cups fresh or frozen blueberries
• 1 teaspoon cornstarch
• 2 teaspoons vanilla extract
• 2 teaspoons lemon zest
• 1/2 cup blueberry or raspberry jam