I do have a recipe for spaghetti pie, but it's at home.  Haven't made it for years, but it is good.  I seem to recall that you use an egg to "bind" the spaghetti together.  You cook the pasta first and then use that as a crust for the sauce, meat and cheese.  You do bake it in the oven. I'll try to remember to post it later.

OK, I found my recipe for Spaghetti Pie.  Haven't made it in a long time, but I do recall that it's good!

6 oz. spaghetti noodles
2 Tbs. butter or margarine
2/3 c. Parmesan cheese
2 eggs, well beaten
1 lb. ground beef
1/2 c. chopped onion
1 15 1/2 oz. jar spaghetti sauce
1 c. cottage cheese
1/2 c. shredded mozzarella cheese

Cook spaghetti and drain.  Toss with butter, Parmesan cheese and eggs.  Form spaghetti into a crust in a buttered 10" pie dish.  Brown ground beef and onion, drain.  Add spaghetti sauce and heat through.  Spread cottage cheese over spaghetti crust, then beef mixture.  Bake uncovered at 350 degrees for 20 minutes.  Sprinkle with mozzarella cheese, bake 5 minutes more or until cheese melts.

I made it once, but I wasn't impressed with the recipe. The way you described it makes sense to me, in the way it would taste good. If you make these, I'd like to know how they panned out.