The pilgrims originally came to America to gain independence from Britain, and so they began distancing themselves from British culture in every aspect of their lives. Dutch and German immigrants taught them how to make a flaky, buttery crust, which the colonists then filled with sliced apples and spices, creating the iconic American dessert we enjoy today. While this certainly wasn’t the first time an apple pie was baked, it was likely the first time any of the colonists had tried the dessert. Apple pie is associated with the Fourth of July because the holiday is about celebrating independence from Britain, and baking apple pie carried a similar meaning for early colonists.

Source: Yahoo! Life