Preheat oven to 375.
Mix cottage cheese, mozzarella cheese, eggs, and parsley. You can skip the eggs if you want, but they help bind the cheese and keep it from oozing out all over your pasta when you serve it.
Spread 2 cups sauce over the bottom of two 9x13 oven & freezer safe dishes. Add 2 cups cheese mixture, then cover with 3 or 4 lasagna noodles, depending on the size of noodles that you use. No need to cook the noodles ahead of time, even if they say no boil. There's enough sauce in this recipe that they cook up just fine.
Repeat until you have added four layers of noodles and end with 2 final cups of sauce. Then finish with 1/4 cup of grated parmesan cheese, more if you'd like. More cheese is always good, right?
Bake lasagna uncovered for 40 minutes. Then let rest 10 minutes before cutting.
Do not bake the second lasagna. Instead cover it with plastic wrap and then aluminum foil and freeze. To prepare it, remove from freezer and let thaw. Then bake at 375 for 40 minutes. Or, if you don't have time to thaw it ahead of time, you can bake it from a frozen state, but it will take at least an additional 30 minutes to bake.
You should also have a sufficient amount of prepared sauce left over as well. Place it in a freezer safe container and freeze it too.