Preheat oven to 350 degrees. Spray a 1 1/2 quart casserole dish with cooking spray. Cook pasta according to the package directions; drain.
Heat skillet over medium heat. Crumble in ground chuck; stir in salt and chili powder. Cook. Stir occasionaly. In large bowl combine salsa and taco sauce; reserve 1/2 cup. Stir beef mixture and reserved pasta into remaining salsa mixture.
Place half of pasta mixture into baking dish. Combine ricotta, 1 cup shredded cheese, and cilantro; spread over pasta in dish. Top with remaining pasta mixture; spread with reserved salsa mixture. Cover with foil and bake 40-45 minutes. Uncover and sprinkle with remaining cheese. Bake until cheese is melted, 5-10 minutes. Serve with sour cream.