Wash and cut all of the vegetables; set aside
Cook pasta according to package directions. Drain and set aside.
In a large skillet or wok, over medium high heat, add 1-2 tbsp olive oil and cook the ground beef.
After the ground beef is browned and cooked, (feel free to discard any fat; we do) add the chicken stock, tomatoes, mushrooms, spinach and all of the vegetables. (For the spinach, I literally just throw the entire bag straight in)
Add the tomato paste, mix and season with salt and pepper to taste
Gently toss ingredients together until the spinach is wilted and all of the vegetables are cooked through
Add the pasta and gently toss some more. Taste and season with more salt and pepper if needed. Sprinkle with fresh parmesan cheese and serve! Enjoy!