Brown beef and drain. Add spaghetti sauce. Simmer for 10 minutes. In a 9x13 pan, layer 1/3 sauce, 1/2 uncooked lasagna pieces, 1 cup ricotta cheese and 1 1/2 cups mozerella cheese. Repeat layers, cover with foil and bake at 350 degrees for 55-60 minutes. Remove from oven, uncover and sprinkle the parmesan cheese on top and return to oven uncovered and bake until cheese is melted.
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