friday food post - ground beef and spinach lasagna rollups

i've made this a few times.  the first time was quite a while ago and i made them in rollups and everyone liked them a lot.  this last time (w/ pictures) i thought the recipe was pretty close to my stuffed shells recipe that i thought i'd make them into shells instead. 
here's the recipe that comes from my famous hamburger cookbook:
1/2 lb. lean ground beef
1/4 c. chopped onion
1 (14 oz.) jar of tomato pasta sauce
1 egg
3/4 c. ricotta cheese
2 T. grated Parmesan cheese
2 tsp. dried oregano leaves
5 oz (1 1/4 c) shredded mozzarella cheese
4 (8X2 1/2 in) frozen precooked lasagna noodles, thawed (anwat note: i couldn't ever find these in the store.  i just bought lasagna noodles and cooked them... probably didn't take much longer than it would to unthaw noodles!)
1 c. fresh baby spinach leaves, washed with stems removed

1.  heat oven to 350 degrees.  in med. skillet, cook ground beef and onion over med-hi heat until beef is thoroughly cooked, stirring frequently.  drain.  stir in /2 c. of the pasta sauce.  remove skillet from heat.  (anwat note:  cook the noodles as per directions on the back of the package.)

2.  spread 3 T of the remaining pasta sauce in bottom of ungreased 8 in' square (2 qt) glass baking dish. 

3.  beat egg in medium bowl.  add ricotta cheese, Parmesan cheese, oregano, and 3/4 c. of the mozzarella cheese;  mix well.

4.  spread 1/4 each of ricotta mixture, spinach leaves, and beef mixture over each lasagna noodle.  starting with short side, gently and loosely roll each noodle;  place seam side down over sauce in baking dish.  top rollups with remaining sauce.  cover with foil.

5.  bake at 350 degrees for 30-40 minutes or until bubbly and thoroughly heated.  remove foil;  sprinkle with remaining 1/2 c. mozzarella cheese.  bake an additional 2-4 minutes or until cheese is melted.  let stand 5 min. before serving.

Try to remember, "I can do all things through Christ who strengthens me."