Pre heat oven to 180°C/350°F
Brown the butter in a medium-sized saucepan over low heat. Begin by melting the butter then heating it for around 3 minutes, allowing it to become golden brown. It will have a lovely nutty aroma. Remove from heat
Add the sugars to the browned butter and stir to combine. Allow the mixture to cool for 10 minutes, while you prepare the pan and the other ingredients
Grease and line a 9 inch (22.5cm) square pan, leaving the baking paper over the edge of the pan, to make it easier to lift the cooked brownies
In a medium sized mixing bowl, use a balloon whisk to combine the flour, baking powder and salt.
To the cooled browned butter mixture, stir through the eggs and the yolk
Now add the dry ingredients to the saucepan and use a spatula to fold through the ingredients, until almost combined
Fold through ¾ of the lightly crushed speckled eggs
Spread blondie mixture into the prepared pan, then top with the remaining eggs
Bake for 25 minutes, until the edges of the blondie is cooked, but still a little fudgy in the centre (it will continue to cook as it cools in the pan)
Cool in pan, then lift out the blondie and cut into 16 squares