A pre-cut, pre-folded carton having a hexagonally shaped, preformed bottom with upwardly extending walls which form at the top thereof a generally circular top for receiving and retaining the bottom, enlarged portion of an egg-shaped container therein. A die-cut blank is first formed with a rear wall section and a pair of front wall sections. Each section is of a height sufficient to receive the largest diameter of the egg-shaped container therein and includes depending lower flap portions. The bottom is formed by folding and gluing the lower flap sections. The resulting carton has a first, flat position in which the bottom wall is folded up between the front and rear walls, and a second, open position where the flap sections, which are already secured to form a folded bottom section, are automatically unfolded or extended to form a double-thickness, hexagonal shaped bottom wall. An upper flap folds downwardly and inwardly from the upper edges of the front and rear wall to form a retaining member of reduced diameter which prevents inadvertent removal of the container.