Method
Preheat the oven to 350 degrees F.
Bring about 6 quarts of water to a boil with 1 Tbsp salt. Add the macaroni and cook, stirring occasionally, for about 8 minutes, or until done.
While the macaroni is cooking, place the tomatoes and their juice into a large bowl. Add the baking soda, and with a fork or your fingers, break the tomatoes into small chunks. Stir in the tomato sauce. Add the cottage cheese, parmesan cheese, spinach, peas, basil and pepper, and toss to combine; set aside.
When the macaroni is done, drain well in a colander. Add to the cheese mixture, toss to mix thoroughly, then pour into an oiled 2 quart baking dish. Cover the baking dish with foil and bake the casserole for 20 minutes. Uncover and bake 10 minutes longer.
Stir in the walnuts and sprinkle with parsley.