Let's begin by browning our butter. Heat a sauce pot to medium-heat and add butter. Stir consistently for 4-6 minutes or until the butter begins to bubble and thicken.
Add the brown butter to a mixing bowl with brown and white sugar. Beat together. Then, add an egg, egg whites, and vanilla extract. Mix.
Pour the white chocolate into a sandwich baggie and snip off one corner with a scissor. Use to make fun shapes on your gingerbread blondies.
Slice and enjoy!