That is only possible if you extend the CSWP, but you configure the query to point to a single list you say. Then it is not required to have such a property. What you can do is add some code to your item display template to show a "view all" link once the last item got processed. This link needs to point to the list or library, which can be retrieved from the ParentLink property.
So in your managed property mappings attribute, add the ParentLink property:
<mso:ManagedPropertyMapping msdt:dt="string">'Link URL'{Link URL}:'Path','Line 1'{Line 1}:'Title','Line 2'{Line 2}:'','FileExtension','SecondaryFileExtension','ParentLink'</mso:ManagedPropertyMapping>
At the end of the item template add the following code to insert the view all link on your page:
<!--#_
var currentItemIdx = ctx.CurrentItemIdx + 1;
if(currentItemIdx === ctx.CurrentGroup.RowCount)
{
_#-->
<div class="view-all"><a href="_#= ctx.CurrentItem.ParentLink =#_" title="View all">View all</a></div>
<!--#_
}
_#-->
Here is the whole example:
<html xmlns:mso="urn:schemas-microsoft-com:office:office" xmlns:msdt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882">
<head>
<title>Two lines - View All</title>
<!--[if gte mso 9]><xml>
<mso:CustomDocumentProperties>
<mso:TemplateHidden msdt:dt="string">0</mso:TemplateHidden>
<mso:ManagedPropertyMapping msdt:dt="string">'Link URL'{Link URL}:'Path','Line 1'{Line 1}:'Title','Line 2'{Line 2}:'','FileExtension','SecondaryFileExtension','ParentLink'</mso:ManagedPropertyMapping>
<mso:MasterPageDescription msdt:dt="string">This Item Display Template will show a small thumbnail icon next to a hyperlink of the item title, with an additional line that is available for a custom managed property.</mso:MasterPageDescription>
<mso:ContentTypeId msdt:dt="string">0x0101002039C03B61C64EC4A04F5361F385106603</mso:ContentTypeId>
<mso:TargetControlType msdt:dt="string">;#Content Web Parts;#</mso:TargetControlType>
<mso:HtmlDesignAssociated msdt:dt="string">1</mso:HtmlDesignAssociated>
</mso:CustomDocumentProperties>
</xml><![endif]-->
</head>
<body>
<div id="TwoLines">
<!--#_
var encodedId = $htmlEncode(ctx.ClientControl.get_nextUniqueId() + "_2lines_");
var linkURL = $getItemValue(ctx, "Link URL");
linkURL.overrideValueRenderer($urlHtmlEncode);
var iconURL = Srch.ContentBySearch.getIconSourceFromItem(ctx.CurrentItem);
var line1 = $getItemValue(ctx, "Line 1");
var line2 = $getItemValue(ctx, "Line 2");
line1.overrideValueRenderer($contentLineText);
line2.overrideValueRenderer($contentLineText);
var containerId = encodedId + "container";
var pictureLinkId = encodedId + "pictureLink";
var pictureId = encodedId + "picture";
var dataContainerId = encodedId + "dataContainer";
var line1LinkId = encodedId + "line1Link";
var line1Id = encodedId + "line1";
var line2Id = encodedId + "line2";
_#-->
<div class="cbs-Item" id="_#= containerId =#_" data-displaytemplate="Item2Lines">
<a class="cbs-ItemLink" title="_#= $htmlEncode(line1.defaultValueRenderer(line1)) =#_" id="_#= pictureLinkId =#_">
<img class="cbs-Thumbnail" src="_#= $urlHtmlEncode(iconURL) =#_" alt="_#= $htmlEncode(line1.defaultValueRenderer(line1)) =#_" id="_#= pictureId =#_" />
</a>
<div class="cbs-Detail" id="_#= dataContainerId =#_">
<a class="cbs-Line1Link ms-noWrap ms-displayBlock" href="_#= linkURL =#_" title="_#= $htmlEncode(line1.defaultValueRenderer(line1)) =#_" id="_#= line1LinkId =#_">_#= line1 =#_</a>
<!--#_
if(!line2.isEmpty)
{
_#-->
<div class="cbs-Line2 ms-noWrap" title="_#= $htmlEncode(line2.defaultValueRenderer(line2)) =#_" id="_#= line2Id =#_">_#= line2 =#_</div>
<!--#_
}
_#-->
</div>
</div>
<!--#_
var currentItemIdx = ctx.CurrentItemIdx + 1;
if(currentItemIdx === ctx.CurrentGroup.RowCount)
{
_#-->
<div class="view-all"><a href="_#= ctx.CurrentItem.ParentLink =#_" title="View all">View all</a></div>
<!--#_
}
_#-->
</div>
</body>
</html>