The glass window on your oven door can become quite dirty due to food splatters or spills which occur during cooking. While cleaning these messes quickly helps prevent them from becoming baked-on, sometimes you just don't have the time. Your oven's self-cleaning cycle can also make the problem worse as it may not clean the oven door but the high temperatures will bake the dirt, grease and debris on the glass, making it even more difficult to remove.
Open the cool oven door fully so that it is parallel to the floor.
Pour 1/4 cup to 1/2 cup white vinegar on the glass window of the oven. Spread the vinegar around with a rag so that it covers all of the baked-on dirt.
Wipe away the vinegar and the loosened dirt with a clean rag after 10 to 15 minutes. If the baked-on dirt has been removed, wipe the glass window dry with a paper towel and shut the oven door. Otherwise, continue to Step 4.
Wet a sponge in hot water and dip the sponge into a small dish of baking soda. The baking soda will stick to the damp sponge.
Scrub the baked-on dirt on your oven window with the baking soda-covered sponge. The baking soda is an abrasive to help loosen the dirt but it will not scratch the glass.
Rinse the sponge and reapply the baking soda when the sponge becomes dirty. Continue to scrub the glass until all of the baked-on dirt is removed.
Wipe away any remaining baking soda with a damp rag and dry the glass oven window with a paper towel.