This 6-Ingredient Sweet Potato Casserole is the easiest holiday side you’ll ever make—soft, creamy sweet potatoes mashed with brown sugar, butter, cinnamon, and a secret splash of orange juice, smoothed into a baking dish, topped with fluffy mini marshmallows, and baked until golden and perfectly puffed, creating that cozy, melt-in-your-mouth texture everyone loves; save this for your next gathering, try it once and you’ll never go back to complicated recipes, because the result is a crowd-pleas