01 - Melt butter in a small skillet over medium heat. Continue cooking, swirling occasionally, until butter foams and develops a golden-brown color with nutty aroma, approximately 3 minutes. Remove from heat and allow to cool slightly.
02 - Place chopped pears, grated ginger, Greek yogurt, milk, honey, cinnamon, vanilla extract, and ice cubes into a blender container.
03 - Pour the slightly cooled brown butter into the blender with the other ingredients.
04 - Blend on high speed until completely smooth and creamy, approximately 45-60 seconds. Scrape down sides if necessary to ensure even incorporation.
05 - Taste the smoothie and add additional honey or maple syrup if desired sweetness level is not achieved.
06 - Divide smoothie evenly between two glasses and serve right away while cold and frothy.