If you don't preheat the oven sufficiently before baking, but put the food directly in the oven, then it's equivalent to letting the food heat up from room temperature to a baked state, which is prone to uneven heating or scorching.

If you preheat the oven before baking, then baking the food is letting the food go straight into the baking state

The preheating time is usually around 10 minutes.

Expanded Information:

Oven Cleaning Methods:

1. If you want to clean your home electric oven then unplug it and wait for it to completely cool down before cleaning.

2, grill and baking pan cleaning, be sure to use a neutral cleaner.

3. Avoid hard, sharp and corrosive cleaning materials, as the non-stick coating on the grill pan is very fragile.

4, clean the inside of the oven, you need to use a soft damp cloth to wipe.

5, use a soft cloth with some detergent to clean the surface of the home electric oven stains.

6, when cleaning, be careful not to drip water into the oven interior, so as not to cause damage to the internal components or the risk of leakage, do not immerse the electric oven into the water to clean.