Cook frozen chopped spinach according to package directions. Cool, drain, and squeeze as much of the excess liquid from the spinach as possible. Spray a large nonstick skillet with no calorie/no fat cooking spray and brown meat with onions, garlic, and bell pepper until meat is cooked through. Add spaghetti sauce, spinach, tomato sauce, and fresh parsley to the cooked meat. Simmer until heated through.