I got this recipe from A Thrifty Mom's website. It is now one of our favorites! Whenever I make it I double the batch and put one pan in the freezer. Go here to her post to see lots more pics of the making process and a few twists if you want. I am just posting the recipe here.
1 box lasagna noodles
1 jar spaghetti sauce
1 16 oz pkg ricotta cheese
1 1/2 c. fresh grated parmesean cheese (set aside 1/2 cup for the top)
2 c. mozzarella cheese, grated
1 large egg
1/2 tsp salt
1/4 tsp pepper
1/8 tsp nutmeg
2 Tbl. parsley, fresh or dry
Start cooking your pasta. Put the noodles in a large pot. As they soften up you can slide them down into the pan so they are totally covered with water. Just don't push them as you don't want them to break. Cook them for 10 minutes. (while they are cooking make the cheese mixture). Do not overcook! When done drain and rinse so they are cool enough to handle. Pour the spaghetti sauce in your baking dish.
In a bowl add all the cheese mixture ingredients. Mix until well blended. Lay out the noodles and pat them dry with paper towels. Spread the filling mixture out in a flat layer over the noodle. Leave the last inch open so the noodle will stick together. Roll it up and place seam side down in a pan with the spaghetti sauce. Sprinkle the 1/2 c. parmesean cheese on the top. Cover with foil and bake at 350 degrees for 35 minutes, then another 10 minutes without foil for a total of 35 minutes.
When I make this I put the other half in a foil disposable pan and cover with foil to freeze. I write the directions & label it on top in a permanent marker so I don't forget what's in there or how to bake it.