How do I add a small excerpt of a blog post on my Front Page Recent Posts widget?

Since my homepage is a static page, WordPress shows a Recent Posts tab with the HTML ID front-page-recent-posts. This seems to be a unique widget, and I cannot find a way to edit its settings. Can someone please suggest a way how I can edit the settings so that it shows a small 10-20 word excerpt of my blog posts?

Currently, it looks like this:

Topic recent-posts excerpt widgets Wordpress

Category Web

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