There are several ways Cookie Run: Kingdom players can make their cookies stronger. Applying toppings and beascuits are a quick way of improving certain aspects of a cookie which they either lack or benefit from having enhanced, and leveling a character up using exp jellies is the most basic way of increasing their power level. However, arguably the most important resource you need when building cookies is skill powder, which is used to upgrade a cookie's main ability - this is separate from their overall level.