Pecan and Brown Butter Blondies

Ingredients

• • 3/4 cup (170 g) unsalted butter, cubed
  • 1 cup (210 g) brown sugar
  • 2 eggs, at room temperature
  • 1 cup (150 g) unbleached all-purpose flour
  • 1/4 tsp fleur de sel, plus more for serving
  • 3 1/2 oz (100 g) dark or milk chocolate, coarsely chopped
  • 3/4 cup (75 g) roasted pecans, coarsely chopped