**1. Prepare the Brown Butter:**
- In a small saucepan, melt the butter over medium heat. Cook, stirring frequently, until the butter turns golden brown and develops a nutty aroma (about 5 minutes). Remove from heat and let cool slightly.
**2. Preheat the Oven:**
- Preheat your oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper, leaving an overhang for easy removal.
**3. Make the Blondie Batter:**
- In a mixing bowl, whisk together the browned butter, brown sugar, and maple syrup until smooth.
- Add the egg and vanilla extract, mixing until well combined.
- In a separate bowl, combine the flour, baking powder, and salt. Gradually stir the dry ingredients into the wet mixture until just combined.
- Fold in any optional add-ins like nuts or chocolate chips.
**4. Bake the Blondies:**
- Spread the batter evenly into the prepared pan. Bake for 20-25 minutes, or until the edges are golden and a toothpick inserted into the center comes out clean.
- Allow the blondies to cool completely in the pan.
**5. Make the Maple Glaze (Optional):**
- In a small bowl, whisk together powdered sugar, maple syrup, and milk or cream until smooth. Adjust the consistency with more milk if needed.
**6. Glaze and Serve:**
- Drizzle the glaze over the cooled blondies. Let set before slicing into squares.
