The Green Buttercup squash has long been touted as one of the most superiorly flavored and textured winter squash varieties on the market. Round and squat in shape, the skin of Green Buttercup squash is spotted and flecked with light green to gray markings. Weighing three to five pounds, the dry, smooth textured, deep-orange flesh of the Green Buttercup squash offers a sweet and mild flavor, similar to that of a sweet potato.