Is there a way to force the Recent Global Posts Widget to use the Excerpt field?

Is there a way to force the Recent Global Posts Widget to use the Excerpt field or to not publish code from the post like caption tags, etc?

There should be a setting to pull from the excerpt field (if it exists), or to force it to only pull from the post or excerpt fields.

Otherwise, how do get it to stop publishing caption tags or other codes that aren’t otherwise shown on the actual post, and which look horrible on a recent posts widget feed?

Thanks.