Preheat oven to 375 degrees F. Pour half the spaghetti sauce over the bottom of a 9- x 13-inch baking dish.
In a large bowl, combine ricotta cheese, 1 cup mozzarella cheese, the Parmesan cheese, eggs, parsley, and salt until well blended.
Spoon cheese mixture over lasagna noodles, distributing evenly, and roll up tightly. Place rollups seam-side down in prepared baking dish; top with remaining sauce. Sprinkle with remaining mozzarella cheese.
Bake 35 to 40 minutes, or until heated through.