Tex mex Ziti

Preheat oven to 350 degrees. Coat a 9 x 13-inch baking dish with nonstick cooking spray. Cook ziti according to package directions; drain. Set aside in a large bowl. Meanwhile, in a large skillet, cook ground beef and onion over medium heat 5 minutes, stirring occasionally; drain. Add to the ziti, along with the spaghetti sauce, picante sauce, ricotta cheese, and 1 cup of the Mexican cheese blend; mix well. Spoon into the baking dish and bake 25 minutes. Remove from the oven and sprinkle the top with remaining 1 cup Mexican cheese blend. Return to the oven and bake about 10 minutes, or until the cheese melts. Sprinkle with chopped cilantro and serve.