The Dev Tools in Edge finally added support for managing and browsing cookies.
Note: Even if you are testing and supporting IE targets, you mine as well do the heavy lifting of your browser compatibility testing by leveraging the new tooling in Edge, and defer checking in IE 11 (etc) for the last leg.
The benefit, of course, to the debugger tab is you don't have to hunt and peck for individual cookies across multiple different and historical requests.