Creating these delicious Key Lime Pie Bars – Browned Butter Blondie is a straightforward process if you follow these steps:

1. Preheat the Oven: Start by preheating your oven to 350°F (175°C). Line an 8×8-inch baking dish with parchment paper, leaving some overhang for easy removal later.

2. Brown the Butter: In a saucepan over medium heat, melt the butter. Continue cooking, stirring frequently, until the butter turns golden brown and develops a nutty aroma. Be careful not to burn it!

3. Mix the Sugar: In a large mixing bowl, combine the browned butter and brown sugar. Whisk until well combined.

4. Add Eggs and Vanilla: Add the eggs one at a time, mixing thoroughly after each addition. Stir in the vanilla extract until fully incorporated.

5. Add Dry Ingredients: In a separate bowl, whisk together the flour and baking powder. Gradually add this mixture to the wet ingredients, mixing until just combined.

6. Add Key Lime Juice: Pour in the freshly squeezed key lime juice and fold it into the batter until evenly distributed.

7. Pour into Baking Dish: Transfer the batter to the prepared baking dish, spreading it evenly into the corners.

8. Bake: Place the dish in the preheated oven and bake for about 20-25 minutes, or until a toothpick inserted into the center comes out clean.

9. Cool: Once baked, remove the dish from the oven and allow it to cool in the pan for about 10 minutes, before carefully lifting it out using the parchment paper. Let it cool completely on a wire rack.

10. Slice and Serve: Once cooled, slice into bars and serve.

By following these steps, you’ll successfully create a batch of Key Lime Pie Bars – Browned Butter Blondie that will amaze your friends and family!