Berry Crumb Bars | Growing Chefs! Ontario

Ingredients

• 3 cups all-purpose flour
• 1 cup sugar
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 1/2 teaspoon cinnamon
• 1 cup butter
• 1 egg
• 1/2 cup sugar
• 4 cups fresh blueberries
• 3 teaspoons cornstarch