Brown-butter toffee blondies – Justin’s Kitchen

Ingredients

• 1/2 tbsp butter, softened for baking pan
• 1/2 tbsp butter, softened for parchment paper
• 1 tbsp all-purpose flour for parchment paper
• 285 g unsalted butter
• 400 g light brown sugar
• 100 g granulated sugar
• 3 eggs, large
• 280 g all-purpose flour
• 1 1/2 tsp salt
• 1 1/2 tsp baking powder
• 2 1/2 tsp vanilla extract
• 120 g walnuts chopped
• 175 g toffee smashed in to small pieces
• 1 tbsp confectioner's sugar for dusting, optional