[header] How to clean oven glass [title] Create a baking-soda scrub. [step] Mix a solution that's 3-to-1 water to baking soda in a shallow bowl until the soda dissolves. It will have the texture of a loose paste. 
Open your oven, and spread this mixture on the glass of your oven door. You can use your fingers to spread it on every bit of the glass.