layerGroup in layerControl is radio. want checkbox - leaflet

Question

if I add "baseMaps" to my layer control, "huts" is actually a checkbox. But I only have one basemap, so I dont need that in my layer controls. But I still wanted to be able tu turn off my "huts" overlay. But as soon as I remove "baseMaps" "huts" becomes a radio button and cannot be turned off. Is there a way?
var huts = L.layerGroup();
var hut00 = L.marker([0, 0]).bindPopup('This is <b>HTML</b>content').addTo(huts);
bounds = new L.LatLngBounds(new L.LatLng(90, -180), new L.LatLng(-90, 180));
var baseMap = L.tileLayer("mapTiles/{z}_{x}_{y}.jpg", {tileSize: 512, minZoom: 1, maxZoom: 4, noWrap: true});
var pcMap = L.map('pcMapDiv', {
layers: [baseMap, huts],
center: bounds.getCenter(),
zoom: 0,
maxBounds: bounds,
maxBoundsViscosity: 1.0
});
pcMap.setView([0, 0], 0);
var baseMaps = {
"Plan": baseMap,
};
var overlays = {'Hütten': huts};
var layerControl = L.control.layers(baseMaps, overlays).addTo(pcMap);
var popup = L.popup();
function onMapClick(e) {
popup
.setLatLng(e.latlng)
.setContent("You clicked the map at " + e.latlng.toString())
.openOn(pcMap);
}
pcMap.on('click', onMapClick);

Answer 1

The 1st argument of L.control.layers populates the "base maps" (with radio button), while its 2nd argument populates "overlays" (with checkboxes).
If you only want overlays, you can simply pass null to the 1st argument:
L.control.layers(null, overlays)
or initialize an empty Control and explicitly add the overlay:
var layerControl = L.control.layers().addTo(map);
layerControl.addOverlay(huts, "Hütten");