Sorry the noodles were mushy, they've always worked for me. You can also use regular lasagna noodles without cooking them. I've done this many times, but you have to prepare the lasagna the day before you cook it.
I just use my usual ingredients but if the sauce is very thick I might add a bit of water to it before layering the sauce, dry lasagna noodles, cheese or meat filling, etc. in the pan. I cover it tightly with foil and keep it in the fridge overnight and bake it as usual the following day. So far this has always worked great for me, as the dry pasta absorbs the extra moisture so the result is perfect.