These straightforward steps will guide you through the process of making butterscotch blondie bars. Follow them closely for the best results:

1. Preheat Your Oven: Set your oven to 350°F (175°C). Grease an 8×8 inch baking pan to prevent sticking.
2. Mix Wet Ingredients: In a large mixing bowl, combine the brown sugar and melted butter. Mix until the mixture is smooth and creamy.
3. Add Eggs and Vanilla: Beat in the eggs and vanilla extract, stirring until well combined.
4. Combine Dry Ingredients: In a separate bowl, whisk together the all-purpose flour, baking powder, and salt.
5. Incorporate Dry Ingredients: Gradually add the dry mixture to the wet ingredients, stirring until just combined. Be careful not to overmix, as this can result in dense bars.
6. Fold in Butterscotch Chips: Gently fold in the butterscotch chips, ensuring they are evenly distributed throughout the batter.
7. Transfer to Baking Pan: Pour the batter into your prepared baking pan, spreading it evenly with a spatula.
8. Bake: Place the pan in the oven and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
9. Cool and Cut: Allow the bars to cool in the pan before cutting them into squares. Enjoy your delicious butterscotch blondie bars!