Jump to recipeOur stuffed acorn squash recipe is a hearty and satisfying main that's just right for the holidays. Credit: Jason DonnellyKey Ingredients for Stuffed Acorn SquashSquash: You'll need two acorn squash for this recipe. Like when shopping for acorn squash, look for ones that have a distinct, bright orange spot—called a ground spot—on one side. You can swap in a white onion instead or use three to four shallots with equally good results. Cut Acorn Squash for RoastingUnlike tender, thin-skinned summer squash, most winter squash are difficult to cut.