6
uncooked plain lasagna noodles (6 ounces)
6
uncooked whole wheat lasagna noodles (6 ounces)
1
pound lean ground beef
1
large onion, chopped (1 cup)
1
jar (14 ounces) tomato pasta sauce (any variety)
1
can (8 ounces) mushroom pieces and stems, undrained
1
container (15 ounces) ricotta cheese
1
package (10 ounces) frozen chopped spinach, thawed and squeezed to drain
1
cup shredded mozzarella cheese (4 ounces)
1/4
cup grated Parmesan cheese
1
teaspoon salt
1/4
teaspoon pepper
2
garlic cloves, finely chopped
Additional grated Parmesan cheese, if desired