The observance appears to be an informal food holiday with early mentions in 2013 on food blogs and holiday calendars.
Introduction
Celebrate National Blueberry Popover Day on March 10 with a delicious treat that you're sure to love! This special day was created to honor the classic breakfast dish, which was first introduced in the late 19th century. The blueberry popover is a light, fluffy pastry filled with sweet and tart blueberries. It's a popular breakfast item that can be enjoyed all year round. So gather your ingredients and get ready to enjoy this tasty treat!



