Step 1

Preheat the oven to 375 degrees °F.

Step 2

Place the sliced mushrooms in a casserole dish and add olive oil, garlic powder, salt, and pepper.

Step 3

Bake the mushrooms for about 10 minutes, then set aside and drain any extra liquid in the casserole dish.

Step 4

Pour about 1/2 of the pasta sauce mixture into the empty casserole dish.

Step 5

Place 3-4 of the lasagna noodles on top of the mixture (breaking each one in half, if necessary).

Step 6

Press each noodle down so that it's covered with about 1/4" of the pasta sauce mixture on top.

Step 7

Add 1/2 of the cottage cheese to the casserole dish.

Step 8

Add a layer of 1/2 of the mushrooms and 1/2 of the spinach.

Step 9

Top with 1/2 of the mozzarella and 1/2 of the parmesan.

Step 10

Repeat steps 4-9 with the remaining ingredients.

Step 11

Top with chopped walnuts (optional).

Step 12

Cover the casserole dish and bake for 30 minutes.

Step 13

Uncover and bake for another 15 minutes.

Step 14

Let cool for 5-10 minutes.

Step 15

Enjoy!