Easy Apple Pie Bars with Crumble Topping - Recipes by Clare

Ingredients

• 2½ cups all-purpose flour
• 1 cup granulated sugar
• 1 tsp baking powder
• ½ tsp salt
• 1 cup (2 sticks) cold unsalted butter, cubed
• 1 egg
• 1 tsp vanilla extract
• 4 cups peeled & diced apples
• 2 tbsp lemon juice
• ½ cup brown sugar
• 2 tsp cinnamon
• 1 tsp cornstarch