In a small sauce pan over medium heat, melt butter. Stir continuously until butter has turned an amber color and has a nutty aroma, about 10 minutes. Remove from heat. Let harden to the consistency of soft butter by placing the browned butter in the refrigerator for about an hour, and stirring every 15 minutes.

Preheat oven to 350 degrees. Use butter or cooking spray to grease the inside of a 9x5 loaf pan.

Using an electric mixer with paddle attachment to beat butter, sugar and brown sugar until lightened, about 2 minutes.

Beat in eggs, one at a time, scraping down sides as needed.

On low speed, mix in crushed bananas, vanilla extract, lemon juice and lemon zest, until well combined.

In a small bowl, stir together flour, salt, and baking soda. Gradually mix into banana mixture

Fold in blueberries.

Bake for 50-60 minutes, or until knife inserted into center of bread comes out with just crumbs.