Thefreedictionary.com provides the following definitions:
Methodology: A body of practices, procedures, and ... working methods:

Outcome: An end result; a consequence.

In other words, methodology is the process of how. A methodology often creates tangible deliverables like pastries. These deliverables can then lead to an outcome such as satiated hunger or gluttony.

A methodology can also directly create an outcome without any intermediate tangible deliverables. Consider how meditation delivers inner calm; while stress delivers the opposite.

The awareness of these distinctions enable us to work with greater clarity. Without this clarity, however, the following could happen: