12 lbs of Ground beef, WWYD?

My BIL is out of town and his daughter discovered the freezer was unplugged.  I don't know how much ground beef was in the freezer from a couple of cows they had processed but only part of it was still frozen.  That was put in another freezer and I gave away some but still have 12 lbs to cook today.

My game plan is to make a big pot of meaty tomato sauce and turn that into lasagna, baked ziti, and put a few containers up for spaghetti later.  I'm also going to make some meatballs and freeze those.  I don't have the makings for chili or I would make up a pot of that, too.  I think that will use it all up but I'm open to any other ideas.  I know that I do not like ground beef that has been browned and then frozen.  To me, it tastes old when I use it later.  

Just curious, what would you do in that situation?

 

We did have burgers for dinner last night so used 1.5 lbs (still have 12 lbs today) for those. I have never frozen a cooked burger so wasn't sure how well that would work.  Do they taste ok after being frozen?

 

This meat was already frozen and then thawed because the freezer was unplugged.  I think it will lose quality if I freeze it raw again but thanks for the suggestion!  I do that when I buy a lot of fresh meat and especially if we're going camping.  It works great to throw in the cooler frozen and cook a day or two later after it thaws.

 

I ended up with:
1 gallon meaty tomato sauce for freezer
1 large pan of lasagna
1 small pan of lasagna
1 2 lb meat loaf
1 gallon of meatballs
1 large pot of chili (found enough ingredients in the pantry)
and 1 lb leftover to use tomorrow