I typically abhor glare when it disguises color, shape or texture, which is always what happens when it appears on opaque objects. Indeed, in these two photos the glare disguises the color of the apple. However, it also adds a dramatic graphic element to each scene, which explains why I very unusually chose to deliberately create the glare.
Glare is a direct reflection, which is a mirror-like reflection of the light source or the modified light source. It occurs only when the item being photographed creates direct reflections (not all surfaces create them). It was easy to determine during normal everyday use that the apple's skin creates them but I didn't know about the stem because of its textured surface and small size. Fortunately as you can see in the first photo, the stem also produces direct reflections, which in that photo create a nice separation between the stem and the background.
Setup Photo 1
To create the glare, I photographed the apple by applying the exact same concept and setup that I regularly use to define the edges of transparent glass in the bright tones created by direct reflections. The background is black felt (though the image would have looked the same if I had used almost any material of any color including white). A circular diffuser much larger than the background is behind it. A medium continuous-light lamp behind the diffuser and shining toward the subject and camera produced the direct reflections on the side and top of the apple and around the stem. A flag placed forward of the lens on the left side eliminated flare on that side.
Setup Photo 2
All details are the same as in Photo 1 except that a very small flashlight fitted with diffusion material to reduce its brightness was also handheld above the apple. That light overpowered the direct reflections that otherwise would have appeared on the top of the apple and around the stem that are displayed in Photo 1.