Oven windows can get really dirty with baked-on grease. This makes it really hard to clean. Instead of manually scrubbing and wasting your time and energy, I found that using a steamer works pretty well. I use the Bissel Steamer.
You will it with water, wait for it to heat up, attach the hard bristle brush attachment, then pull the trigger to release steam as your gently melt and scrub the grease off.
The steam, which is really hot, will detach the dry grease from the glass but you’ll still need to remove the grease off the glass. For that, I use Clorox or Lyson disinfectant wipes. In general, these wipes are great for cleaning glass.
Now, when I make roasted tomatoes and turn on the oven light, I can actually see through the window again 🙂