Unlike in earlier versions of CorelDRAW, the toolbox of CorelDRAW X7 doesn't show the Outline Pen tool by default. With quick customization, it can be brought back easily. Just beneath the last tool item, is a new Quick Customize icon.  After clicking the button, simply scroll down the list of tools until you see the Outline options and enable the tick mark against "Outline Flyout". See reference image below.

Tip provided by Pratik Shah, CorelDRAW Master, Graphic Designer & Trainer.