Preheat your oven to 350°F (175°C) and lightly grease a 9x13-inch baking pan.

In a large mixing bowl, combine the angel food cake mix and lemon pie filling. Mix well until smooth.

Pour the batter into the prepared pan and spread it evenly.

Bake for 25-30 minutes, or until the top is golden brown and a toothpick inserted into the center comes out clean.

Let the bars cool completely before cutting into squares and serving.