Teacher's Pet Squares | Cooking Professionally

Ingredients

• 1 cup all-purpose flour
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 2 1/4 teaspoons ground cinnamon, divided
• 1/2 cup plus 2 tablespoons white sugar, divided
• 1/4 cup unsalted butter, melted
• 1/2 cup brown sugar, packed
• 1 large egg
• 1 teaspoon vanilla extract
• 1/2 cup apple, chopped
• 1/2 cup walnuts, finely chopped