NATIONAL ACORN SQUASH DAYOn September 7th, National Acorn Squash Day celebrates the autumn flavors found in what is also known as pepper squash.Even though it is considered a winter squash, acorn squash belongs to the same species as all summer squashes including zucchini and yellow crookneck squash.The most common variety comes in a mostly green outer shell, often with a splotch of orange on its side or top. It has many uses and many types of recipes we can try for better tasting food .