There are several methods how to do it, but functionally speaking, QBO does not have specific functionality for it.

So, generally, these options are in two categories: either using manual methods or workarounds in QBO, or using an external manufacturing app that plugs into QBO (option 3 below).

Option 1. Manual journals.

Recording manual journals at every step from Raw materials -> Work in progress -> Finished goods -> Cost of Goods sold.

Option 2. A workaround, which gets the same result as previous, without using manual journals.

Option 3. Choose an inventory or a manufacturing app that can do it.

In the QuickBooks app store there are inventory apps that support light assembly (simply converting raw materials into finished goods), and several apps for manufacturing (in addition, calendar and capacity scheduling, MRP, shop-floor control, FIFO), like MRPeasy, depending on depth/complexity required. They sync automatically with QBO.